Are you looking for a JavaScript development company to create a website with cross-platform compatibility and ensure a top-tier user experience for your customers? We have evaluated countless success stories, client feedback, and service offerings of leading JavaScript development agencies to build our listing — all to help businesses like yours find the right partner. Browse our directory and customize your search by pricing, minimum budget, team size, location, and other criteria to begin your search.

Best JavaScript Development Agency Rankings

22 Companies - Rankings updated: September 03, 2026

We evaluate every agency on DesignRush for technical expertise, delivery quality, and verified feedback to help businesses find reliable software development services. Some listings may be paid.

JavaScript Development
Transportation & Logistics
$50,000 & Up
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  • Wezom

    Turning Digital Ideas into Powerful & Lucrative Realities

    Wezom offers custom software development services, providing solutions that address business challenges, meet market demands, enhance internal operations, and stay up-to-date with the latest technologies...

    Top Services:

    • IT Services
    • Software Development
    • Mobile App Development
    • Web Design
    • eCommerce Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    250 - 499
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    27 Projects Listed

    Wezom Services

    • IT Services
    • Software Development
    • Mobile App Development
    • Web Design
    • eCommerce Development
    • Cybersecurity
    • UI/UX Design
    • Business Consulting
    • ERP Consulting
    • Big Data Analytics
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Metinvest
    • John Deer
    • Roshen
    • INTERPIPE
    • Aptiv
    • Toyota Material Handling
    • SCHWARZ LOGISTICS
    • Cooper & Hunter
    • OneVoiPlanet
    • Nova Lines
    Data sourced from the agency's DesignRush profile

    Wezom Reviews & Testimonials

    • Elena Nosenko
      Elena Nosenko Lead Account Manager at Elogic Commerce
      5.0 ★

      IT Services Review from Elena Nosenko

      Elogic Commerce highly recommends WEZOM as a trusted partner for CRM system development. They demonstrated a deep understanding of our needs and delivered a custom solution that optimized workflows, enhanced client engagement and ensured scalability. WEZOMs professionalism, technical expertise, and dedication made the collaboration seamless and productive. We confidently recommend them to any business seeking a reliable partner for CRM development.

    • Victoria Savchuk
      Victoria Savchuk Marketing Manager at Alcor
      5.0 ★

      Software Development Review from Victoria Savchuk

      Alcor is pleased to recommend WEZOM as a reliable partner in the development and implementation of an R&D center management system. WEZOM demonstrated a deep understanding of our business needs and successfully implemented a platform

    • Violeta Baranovska
      Violeta Baranovska Head of Marketing at VT Labs
      5.0 ★

      Software Development Review from Violeta Baranovska

      VT Labs is incredibly impressed with WEZOM's expertise in developing custom VR/AR marketing and sales tools for our client. The collaboration was fascinating and successful. We were looking for ways to showcase VR/AR technology in a more engaging and immersive manner. WEZOM listened to our needs and created stunning VR experiences and interactive sales presentations that truly capture the power of VR/AR.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (9)
    4.8 4.8 (44)

  • VT Netzwelt

    Mobile, Web & eCommerce Software Development Company

    VT Netzwelt is one of the leading digital technology company offering end-to-end development services. We offer digital transformation of your business with disruptive web and mobile apps...

    Top Services:

    • Software Development
    • eCommerce Development
    • Web Development
    • Mobile App Development
    • IT Services
    • Show more
    Location
    New York City, New York
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    15 Projects Listed

    VT Netzwelt Services

    • Software Development
    • eCommerce Development
    • Web Development
    • Mobile App Development
    • IT Services
    • Product Design
    • AI Development
    • IoT
    • CRM Consulting
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Belle Medical
    • EJ Menswear
    • SparkFive
    • MindSurf
    • Patient Pal
    • Shazam
    • GFK
    • Offerista
    • RedQuanta
    • Barcoo
    Data sourced from the agency's DesignRush profile

    VT Netzwelt Reviews & Testimonials

    • Clifford Tindell
      Clifford Tindell Business Founder & Wellness Consultant at Core Direction
      5.0 ★

      Software Development Review from Clifford Tindell

      VTNETZWELT offers development services for a Health, Wellness & Fitness company. They provide high-grade developers and SDETs that primarily work on .NET, With VTNETZWELT, the company has grown their footprint with every end client, indicating an excellent service. The team provides a dedicated delivery manager who is responsive to all issues and queries. Their understanding of the business and project goals is commendable. They are always open to new projects and ideas. They work well with a team."

    • David An
      David An Strategic Account Manager at Think to Share IT Solutions Pvt. Ltd
      5.0 ★

      Mobile App Development Review from David An

      An entertainment services firm hired VT Netzwelt to design and create a Flutter mobile application. Our team generated concepts, preliminary designs, and mock-ups for approval following the completion of the discovery process.

    • Stephanie Stimac
      Stephanie Stimac Web Platform PM & Developer Advocate at Igalia
      5.0 ★

      Mobile App Development Review from Stephanie Stimac

      VT Netzwelt was hired by an edtech company to improve and resolve issues within their mobile app. Their responsibilities include code refactoring, bug testing, and implementing backend improvements.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (6)
    5.0 5.0 (10)

  • Infinum

    Solving complex problems with design and technology since 2005.

    We create digital products that streamline operations, grow your audience, and boost business success. Partnering with visionary brands, we transform ideas into impactful solutions using innovative design and technology. Discover how our Software Development expertise can elevate your next project...

    Top Services:

    • Web Development
    • Web Design
    • Mobile App Development
    • UI/UX Design
    • Software Development
    • Show more
    Location
    Zagreb, Croatia
    Number of Employees
    250 - 499
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    24 Projects Listed

    Infinum Services

    • Web Development
    • Web Design
    • Mobile App Development
    • UI/UX Design
    • Software Development
    • Cloud Consulting
    • DevOps Consulting
    • Cybersecurity
    • Staff Augmentation
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Porsche
    • Nike
    • CITI
    • Royal Caribbean
    • Philips
    • Bayer
    • T-Mobile
    • P&G
    • Universal
    • Virgin Mobile
    Data sourced from the agency's DesignRush profile

    Infinum Reviews & Testimonials

    • Matic Debelak
      Matic Debelak Management Board Member at Modra zavarovalnica, d.d.
      5.0 ★

      Mobile App Development Review from Matic Debelak

      Workstream 1: research and product strategy Workstream 2: ETP release Technology : Vendor use Flutter framework, which allows one programming language and one codebase to create two different apps (for iOS and Android). Clearly defined roles and responsibilities, communication is clearly and respectfully, very effective project methodology, trying to understand every time how their activities fits into mission of Modra zavarovalnica, respect each member of team, etc.

    • Claus-Peter Mueller
      Claus-Peter Mueller Managing Director at NLB Lease&GO doo
      5.0 ★

      Software Development Review from Claus-Peter Mueller

      We have engaged Infinum to develop an app that would digitalise our leasing process. From creating the initial offer through the necessary financing application and client identification to the final signature – all the steps required to successfully lease a vehicle or other object can be performed in-app, freeing the users of friction and having to deal with tedious paperwork. The app itself in the background has 30+ integrations, while keeping a seamless and quick to follow process on the front for our users. That application is in production and Infinum is responsible for maintaining it and further improving. After the initial development, we have additionally expanded our scope from vehicles to other equipment. They have also developed a Leasing widget, product which enables quick financing model while purchasing a vehicle online on car seller marketplace pages. At this moment, we are still in partnership with Infinum, and their engagement is mainly focused on localising the app to other countries and supporting us in our further business expansion. The work performed was done in Ruby on Rails and React technology, with support of other services.

    • Anonymous VP of Marketing at SaaS Company
      5.0 ★

      Web Design Review from Anonymous

      Thanks to Infinum's website refresh, the client has seen an almost 100% improvement in their website's conversion rates. The team excels at project management, using the client's own proprietary tool and also Figma very well. Their proficiency in design, delivery, and client relations stands out.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (9)
    4.8 4.8 (73)

  • QOLOS

    Award Winning Custom Development Experts | ERP Integration | Shopify/BigCommerce

    QOLOS (pronounced "koh-lohs") is a U.S.-based software development company, specializing in building custom, high-performance digital solutions for brands that demand innovation. From complex ERP integrations to e-commerce solutions - you are in good hands with QOLOS...

    Top Services:

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Software Development
    • UI/UX Design
    • Show more
    Location
    Green Bay, Wisconsin
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $50,000 & Up

    QOLOS Services

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Software Development
    • UI/UX Design
    • SEO
    • Software Testing
    • Mobile App Development
    • ERP Consulting
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Thermos
    • Certco
    • Stryker
    • Louisville Vegan Jerky
    • Dallas Morning News
    • Dallas Police Department
    • Bancroft and Sons
    • Schneider National
    • Cocktail Courier
    • Restaurant Warehouse
    Data sourced from the agency's DesignRush profile

    QOLOS Reviews & Testimonials

    • Amanda Viviano
      Amanda Viviano Vice President at Bartz Viviano
      5.0 ★

      WooCommerce Review from Amanda Viviano

      We hired Qolos to build our local florist shop's website on WordPress and WooCommerce, and we couldn't be happier with the results. From the start, they took the time to understand our business and created a site that's not only beautiful but easy for our customers to browse and shop. The WooCommerce setup was seamless, our online ordering works exactly the way we needed it to. But what really sets Qolos apart is their ongoing monthly maintenance. We never have to worry about updates, security, or technical issues because they stay on top of everything. Any time we've had a question or a small change request, they've been responsive and professional. As a small local business, it means a lot to work with a team that genuinely cares about keeping our site running smoothly. Qolos has been a true partner, not just a vendor. Highly recommend them to any local business looking for reliable web design and maintenance!

    • Sanjay Singh
      Sanjay Singh Manager at JCB India Ltd.
      5.0 ★

      Web Development Review from Sanjay Singh

      I kept getting negative reviews about my app for technical glitches, heating issues, functionality, loading time, crashing, and more bugs. So, I reached out to QOLOS after going through 2-3 renowned review platforms. I explained my app issue to the team, and they did tremendous work with their mobile testing solutions. Also, I wanted to build a website for my app. They created a feature-rich and seamless website.

    • Sarah Nesheim
      Sarah Nesheim Co-Founder at Crafted
      5.0 ★

      Shopify Review from Sarah Nesheim

      Working with QOLOS was the best decision I have made in regards to scaling my business. They are professional, so creative, they communicate every step of the way and their pricing is fair for the highest quality work. The designer of our logo and website did it well and I am so impressed and proud of the final product! the designer listened and knew exactly what I wanted which made the process so simple. Seriously could not recommend QOLOS more!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (11)
    5.0 5.0 (6)

  • JetRuby

    AI-Enabled Сustom Software Development

    We're JetRuby — AI-native, award-winning, and ISO-certified agency that's been shipping software since 2010. Our 250+ engineers turn bold ideas into production-ready products, starting from budgets of $50,000 and scaling all the way to enterprise roll-outs...

    Top Services:

    • Web Development
    • Software Development
    • Mobile App Development
    • Web Design
    • AI Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    33 Projects Listed

    JetRuby Services

    • Web Development
    • Software Development
    • Mobile App Development
    • Web Design
    • AI Development
    • IoT
    • IT Services
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Financial Times
    • Universum Global
    • Linksquares
    • Sortly
    • NameCoach
    • Anova
    • Osram
    • BackBase
    • Glowforge
    • CampusOptics
    Data sourced from the agency's DesignRush profile

    JetRuby Reviews & Testimonials

    • Artur Ozierański
      Artur Ozierański Chief Executive Officer at Holdapp
      5.0 ★

      Mobile App Development Review from Artur Ozierański

      JetRuby provided staff augmentation services for us. developed a mobile app for a design platform. The team was responsible for implementing the backend server and admin panel, and frontend code. The team was made up of experienced developers that have great communication skills, which made resolving any issues or questions a breeze. JetRuby developers kept up-to-date with the latest technologies and trends in development and suggested updates and improvements to the application as needed.

    • Patrice Archer
      Patrice Archer Founder & CEO at Appy Ventures
      5.0 ★

      Web Design Review from Patrice Archer

      They developed a SaaS web platform with smart scheduling and automation tools for us at and built the platform's front- and backend and integrated a custom analytics dashboard and calendar integrations. But to be honest what impressed us most was how deeply they engaged with our vision. They didn't just write code they challenged assumptions, proposed better workflows, and contributed as if they were part of our internal product team. Their ability to think strategically and focus on user experience made them feel more like tech partners than a typical outsourced vendor.

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    4.5 4.5 (2)

  • Twenty Ideas

    Partnering with innovators to create a healthier world through technology

    We're a product design agency developing custom software solutions for health, learning, and more. We partner with innovators to bring purpose to the digital world through what we make and how we make it...

    Top Services:

    • Software Development
    • Mobile App Development
    • Product Design
    • AI Development
    • UI/UX Design
    • Show more
    Location
    Eugene, Oregon
    Number of Employees
    50 - 99
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed

    Twenty Ideas Services

    • Software Development
    • Mobile App Development
    • Product Design
    • AI Development
    • UI/UX Design
    • Market Research
    • Cloud Consulting
    • Design Services
    • DevOps Consulting
    • Branding
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PHC Global
    • XPRIZE Foundation
    • University of Oregon
    • Daimler Truck North America
    • D&H
    • Dr. Linda Dahl, MD
    Data sourced from the agency's DesignRush profile

    Twenty Ideas Reviews & Testimonials

    • Justin Collins
      Justin Collins CEO at ChartLamp
      5.0 ★

      Startups Software Development Review from Justin Collins

      Our first engagement with Twenty Ideas was accurately scoped and allocated from day one, and that was impressive. Being on time and budget while exceeding expectations seems impossible for many vendors, but with Twenty Ideas, there were zero issues. They anticipated our needs and presented clear options when necessary.

    • Rachel Efron
      Rachel Efron Chief Creative Officer at Muzi
      4.8 ★

      Mobile App Development Review from Rachel Efron

      The most impressive thing was the collaboration we established. I had been creating this app by myself for so long, and all of a sudden, I had a whole team of thought partners. Twenty Ideas really got in there with me, learned what I was trying to make, and collaborated with me on it. It was an extremely rewarding experience, and we're thrilled with the app!

    • Jana DiSanti
      Jana DiSanti Review from Google
      5.0 ★

      Jana DiSanti's Review Sourced from Google

      I started working with Twenty Ideas in a part-time consulting capacity, but I became so taken with the team’s passion, mission, and supportive culture, that I ended up applying for a full-time position. I’ve been with the team for three and a half years now, and it’s given opened doors to expand my skill set; work with smart, kind, and dedicated people, every day; and work with clients who truly care about making a positive impact, to create life-changing solutions together. It’s a great place to work!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.4 4.4 (2)
    5.0 5.0 (8)

  • Intellectsoft

    We integrate, innovate, and elevate enterprise systems.

    Intellectsoft builds custom software, AI solutions, and dedicated engineering teams for enterprises and fast-growing businesses across the US and UK...

    Top Services:

    • Software Development
    • Mobile App Development
    • Wearables
    • Software Testing
    • Blockchain
    • Show more
    Location
    New York City, New York
    Number of Employees
    100 - 249
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed

    Intellectsoft Services

    • Software Development
    • Mobile App Development
    • Wearables
    • Software Testing
    • Blockchain
    • AI Development
    • UI/UX Design
    • Big Data Analytics
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Harley-Davidson
    • the London Stock Exchange
    • Ernst & Young
    • Qualcomm
    • Bombardier
    Data sourced from the agency's DesignRush profile

    Intellectsoft Reviews & Testimonials

    • Harshal Chhajed
      Harshal Chhajed Undisclosed at Undisclosed
      4.5 ★

      Software Development Review from Harshal Chhajed

      They have highly skilled support staff for faster resolution which leads to customer satisfaction. Also, it has many features including IoT and blockchain apart from regular software development. If there are any changes in the scope of the project at a later stage, it can prove quite costly and also difficult to accommodate last-minute client-side scripting changes. They are versatile, cost-effective, and offer quick customer support. They offer a very customized software development tool where business needs can be addressed. It is very cost-optimized and hence can help generate good returns for business investment.

    • Vitaly Dyachenko
      Vitaly Dyachenko CEO and Founder at UppLabs LLC
      5.0 ★

      Software Development Review from Vitaly Dyachenko

      Intellectsoft provided a great partnership by delivering quality services and working fast. They helped us to accomplish all the clients' projects on time. The team communicated transparently and showed [] great dedication. They were an ideal partner! (Verified via email)

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    4.3 4.3 (2)

  • CHI

    Together, beyond expectations

    CHI Software is a technology solution provider that offers a full set of software-based services from custom software development to maintenance & support. Our talented team is passionate about Generative AI, Cloud Computing, Data Engineering, and IoT. CHI's success comes from care of every client...

    Top Services:

    • AI Development
    • Mobile App Development
    • Software Development
    • Web Development
    • Staff Augmentation
    • Show more
    Location
    Lviv, Ukraine
    Number of Employees
    500 - 999
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed

    CHI Services

    • AI Development
    • Mobile App Development
    • Software Development
    • Web Development
    • Staff Augmentation
    • Software Testing
    • IoT
    • Big Data Analytics
    • IT Services
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Vodafone
    • Lecre
    • Media Mrkt
    Data sourced from the agency's DesignRush profile

    CHI Reviews & Testimonials

    • David Gornshtein
      David Gornshtein Co-Founder at Binadox
      5.0 ★

      Web Development Review from David Gornshtein

      My company was looking for a development team to proceed with the development process. We needed to set up a service [that] allows our clients to monitor, control, and optimize their Cloud & SaaS spend. [The] CHI Software team delivered services and technologies we need[ed] to reach our financial goals. (Verified via email)

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    4.3 4.3 (1)

  • Intelliarts

    Creating value by reinforcing companies with innovation

    Intelliarts is an Eastern European technology consulting and software engineering partner that specializes in building full-cycle data-driven and ML-powered solutions. With our talented team and proven expertise, we're committed to helping businesses worldwide expand their digital transformation initiatives...

    Top Services:

    • Software Development
    • AI Development
    • Big Data Analytics
    • IoT
    • Staff Augmentation
    • Show more
    Location
    Lviv, Ukraine
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    11 Projects Listed

    Intelliarts Services

    • Software Development
    • AI Development
    • Big Data Analytics
    • IoT
    • Staff Augmentation
    • Cloud Consulting
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • HubSpot
    • Dell Technologies
    • EV Connect
    • Indigo Ag
    • Autodesk
    • optiMEAS
    • OpenX
    • Nowsite
    • DDMR
    • Optimizely
    Data sourced from the agency's DesignRush profile
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    4.8 4.8 (45)

  • Pastilla

    For People. For Progress.

    Pastilla is a full-service agency based in Los Angeles. We partner with public agencies, nonprofits, and global brands to turn complex missions into clear brand and digital experiences that build trust and move communities to action...

    Top Services:

    • Branding
    • Design Services
    • Graphic Design
    • Web Design
    • Web Development
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $185/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    18 Projects Listed

    Pastilla Services

    • Branding
    • Design Services
    • Graphic Design
    • Web Design
    • Web Development
    • Mobile App Development
    • Digital Marketing
    • Social Media Marketing
    • Content Marketing
    • Video Production
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • City of LA Recreation & Parks
    • Black Girls Code
    • Sacramento Public Library
    • Consumer Technology Association
    • Clean Power Alliance
    • Microsoft
    • Metrolink
    • Hollywood Foreign Press Associations (HFPA)
    • Disney
    • Lossan
    Data sourced from the agency's DesignRush profile
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    5.0 5.0 (3)

  • Supercharge

    Supercharge - Innovating Digital Product Development

    At Supercharge, we partner with our clients to turn disruption into opportunity by creating transformative digital solutions. With over 200 digital experts across New York, London, Amsterdam, Helsinki, Vienna, and Budapest, we develop digital strategies, design delightful interfaces, and build robust software...

    Top Services:

    • Software Development
    • AI Development
    • Digital Services
    • Product Design
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    6 Projects Listed

    Supercharge Services

    • Software Development
    • AI Development
    • Digital Services
    • Product Design
    • Mobile App Development
    • Digital Strategy
    • IoT
    • UI/UX Design
    • Software Testing
    • Managed Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Britned
    • Eleclink
    • gateretail
    • OTP Bank
    • Kodak Alaris
    • Deutsche Telekom
    • Vodafone
    • Santander
    • VYRD
    • Cambridge Mobile Telematics
    Data sourced from the agency's DesignRush profile
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    5.0 5.0 (1)

  • DECODE

    Your strategic partner in creating exceptional software products.

    We're an EU-based, full-service software development partner for growing tech companies and established mid-market businesses...

    Top Services:

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • AI Development
    • Software Testing
    • Show more
    Location
    Zagreb, Croatia
    Number of Employees
    50 - 99
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed

    DECODE Services

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • AI Development
    • Software Testing
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Microsoft
    • Royal Caribbean
    • Asseco
    • AT&T
    • Bizzon
    • Qrypt
    • Contacts411
    • VeridenKey
    • GDI
    • Shake
    Data sourced from the agency's DesignRush profile

    DECODE Reviews & Testimonials

    • Igor Caleta-Car
      Igor Caleta-Car Review from Google
      5.0 ★

      Igor Caleta-Car's Review Sourced from Google

      I worked at Decode for about a year, and during that time I had the chance to meet many wonderful colleagues who helped me grow professionally and learn new skills. Because of the nature of my role, I also had the chance to collaborate with clients across Europe, the USA, and the Middle East, and even visit some of them in person. The team I worked with was everything you could hope for - driven, proactive, and always willing to jump in and help. The development teams I was part of were well-balanced in both skills and personalities, led by highly experienced engineers who lead by example. Beyond the projects themselves, the company culture stands out. People are friendly, and the leadership is focused on sustainable growth while supporting employees development. Decode isn’t afraid to promote talent and encourage people to step outside their comfort zones in order to grow. The office is also in one of the best business neighborhoods in Croatia, with plenty of variety for employees nearby. Overall, I highly recommend Decode as a great place to work!

    • Marianne Van den Ende
      Marianne Van den Ende Review from Google
      5.0 ★

      Marianne Van den Ende's Review Sourced from Google

      Working with DECODE has been a great experience so far! Their team is skilled, flexible, and always open to collaboration, which makes the process smooth and enjoyable. Their modern design approach aligns well with our vision, and they show a real commitment to delivering a strong final product. What we particularly appreciate is their willingness to engage and adapt as the project evolves. While some aspects require additional clarification along the way, they are always receptive to feedback and ready to adjust accordingly. The overall working atmosphere is positive and professional, making them a great partner to work with. Looking forward to the second half of our project!

    • Charles Lucas
      Charles Lucas Review from Google
      5.0 ★

      Charles Lucas's Review Sourced from Google

      These guys are awesome. Such a great agency and do a fantastic job. Couldn't recommend more.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (23)

  • The Distance Agency Ltd

    Stunning Apps

    A top-rated UK app development company, delivering award-winning Android and iOS apps since the first iPhone...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • UI/UX Design
    • Digital Strategy
    • Show more
    Location
    York, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    17 Projects Listed

    The Distance Agency Ltd Services

    • Mobile App Development
    • AI Development
    • Software Development
    • UI/UX Design
    • Digital Strategy
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • The Encephalitis Society
    • NHS
    • Virgin Trains East Coast
    • Slimming World
    • Astra Zeneca
    • SafeStyle
    • Bentley
    • Eurotunnel Le Shuttle
    Data sourced from the agency's DesignRush profile
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  • AppIt Ventures

    We Build Custom Apps.

    We're an award-winning, woman-owned and led, custom software development company...

    Top Services:

    • Mobile App Development
    • Big Data Analytics
    • UI/UX Design
    • Software Development
    • Show more
    Location
    Denver, Colorado
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed

    AppIt Ventures Services

    • Mobile App Development
    • Big Data Analytics
    • UI/UX Design
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Personal Assistance Services of Colorado
    • Prairie IT
    • General Electric
    • Scholarlead
    • You:Flourish
    • Vayn
    • Starlight Software Solutions
    • Liebherr
    • Seattle Fish Company
    • State of Colorado
    Data sourced from the agency's DesignRush profile

    AppIt Ventures Reviews & Testimonials

    • Kamlyn Spivey
      Kamlyn Spivey Review from Google
      5.0 ★

      Kamlyn Spivey's Review Sourced from Google

      The AppIt team has been a project-saver for our company. I went with AppIt because I was looking for a trustworthy, transparent partner to guide me (an app-dev newbie) through building a new feature for our mobile app. Their quality of work, customer service, ability to meet timelines, and transparency has been phenomenal. Highly recommend Kayla and the AppIt to any company needing development help.

    • Haile Elizondo
      Haile Elizondo Review from Google
      5.0 ★

      Haile Elizondo's Review Sourced from Google

      As fellow Colorado Companies to Watch winners, our team met Amanda and her team in 2022 and its been a match made in heaven! We have our own in-house development team that is swamped with working on our web application, Kanso, and did not have the bandwidth to work on sub-applications and portals. Here's where AppIt came in to save the day! We are closing out our first project with AppIt, and we are more than impressed. The application is clean and beautiful. Their team has been a joy to work with and I look forward to our check-ins on progress. This project has been so successful we have lined up a handful projects to continue this business relationship. Kanso Software is very grateful for AppIt!

    • Jillian Krenk
      Jillian Krenk Review from Google
      5.0 ★

      Jillian Krenk's Review Sourced from Google

      I have worked with AppIt Ventures on two different enterprise size solutions. Throughout my career and have worked with several development teams. AppIt Venture stands out above the rest. The extraordinary service provided by AppIt Ventures starts at the top, with their CEO Amanda, and is executed throughout the entire team. It’s clear their employees are empowered to make decisions, take care of their customers, and provide the customer service their leader promotes. Kayla, our outstanding project manager is creative, reliable and detail-oriented offering guidance and support to ensure all of our development’s needs are on track and being done with our greater vision and application needs in mind. If any bugs pop-up, which is bound to happen, AppIt's team is on it and has the issue quickly fixed or a solution put into place within hours. With AppIt's development team, I have peace of mind knowing we can quickly and easily adjust to our customer's requests and provide an unparalleled customer and participant experience. I highly recommend using AppIt Ventures and look forward to continuing my partnership with them.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.7 4.7 (31)

  • VITCAKE Ltd.

    We tame technology

    Software development Simply expand your product to different platforms using experience of vITcake professionals — complexity doesn’t matter...

    Top Services:

    • Web Development
    • Software Development
    • IT Services
    • UI/UX Design
    • Graphic Design
    • Show more
    Location
    Daugavpils, Latvia
    Number of Employees
    Under 49
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    4 Projects Listed

    VITCAKE Ltd. Services

    • Web Development
    • Software Development
    • IT Services
    • UI/UX Design
    • Graphic Design
    • Product Design
    • Web Design
    • ERP Consulting
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Klipmarine Ltd.
    • AtoZ
    • Danica crewing
    • Afalita
    Data sourced from the agency's DesignRush profile
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    5.0 5.0 (3)

  • Switch Software Solutions

    A lifelong partner to solve any tech challenge together

    Hi there! We were expecting you! We are a nearshore software services and consulting company that partners with forward-thinking companies to achieve their business goals and accelerate growth in the digital age. We are seen as a lifelong partner for tackling any tech challenge...

    Top Services:

    • Software Development
    • Mobile App Development
    • IT Services
    • UI/UX Design
    • Web Development
    • Show more
    Location
    Montevideo, Uruguay
    Number of Employees
    100 - 249
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

    Switch Software Solutions Services

    • Software Development
    • Mobile App Development
    • IT Services
    • UI/UX Design
    • Web Development
    • Software Testing
    • AI Development
    • VR/AR
    • Cloud Consulting
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Penske Logistics
    • Santander Consumer
    • Zenus Bank
    • Verifone
    • BBVA Bank
    • Axletree
    • Oddissey
    • BCIE
    • Sodexo
    • Allied World
    Data sourced from the agency's DesignRush profile

    Switch Software Solutions Reviews & Testimonials

    • Hernán Garro
      Hernán Garro Review from Google
      5.0 ★

      Hernán Garro's Review Sourced from Google

      Excellent working place. People is the most valuable characteristic. Interest in continuous improvement is not less remarkable. It is a comfortable place to work with plenty of amenities.

    • Andres Sierra
      Andres Sierra Review from Google
      5.0 ★

      Andres Sierra's Review Sourced from Google

      Test your software before taking it to production, do it with what you are developing or with what you are buying.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (42)

  • Intertech

    Bringing the best consultants on board!

    Intertech is a company specializing in various IT services, offering expertise in planning, architecture, design, implementation, development, quality assurance, testing, version control, documentation, and deployment of software projects...

    Top Services:

    • Software Development
    • Mobile App Development
    • AI Development
    • IoT
    • IT Services
    • Show more
    Location
    Eagan, Minnesota
    Number of Employees
    50 - 99
    Average Hourly Rate
    $165/hr
    Minimal Budget
    $50,000 & Up

    Intertech Services

    • Software Development
    • Mobile App Development
    • AI Development
    • IoT
    • IT Services
    • Web Development
    • DevOps Consulting
    • Cloud Consulting
    • Staff Augmentation
    • Big Data Analytics
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • RSM
    • Mercury Marine
    • IRS
    • Target
    • Wells Fargo
    • Microsoft
    Data sourced from the agency's DesignRush profile

    Intertech Reviews & Testimonials

    • Erin Wilson
      Erin Wilson Review from Google
      5.0 ★

      Erin Wilson's Review Sourced from Google

      The training was very good. The instructor did an excellent job of reiterating talking points with real life experiences and stories from the IT industry. I enjoyed the activities with the table groups and the hands on learning technique. I am currently on a Scrum team, and am excited to apply what I have learned from this class to our team to help increase efficiency.

    • Susan Plettner
      Susan Plettner Review from Google
      5.0 ★

      Susan Plettner's Review Sourced from Google

      Intertech did an excellent job with the Scrum Master Certification Course. The course/training itself was very good and informative. Very interactive and the instructor, Lonnie, was amazing. She had so many real life experiences to share as related to scrum. The Intertech facility and the staff were wonderful. The people who worked there were helpful and friendly and the facility worked well to hold the training. It was a great experience and I would recommend Intertech for training and certification courses.

    • Maggie Rottach
      Maggie Rottach Review from Google
      5.0 ★

      Maggie Rottach's Review Sourced from Google

      Excellent interaction from the Intertech staff from initial arrival and throughout the classroom sessions. I found the instructor to be knowledgeable on the course material for Java 8. He kept the class at a reasonable pace based on the various skill levels and background of the attendees. The coursework included well prepared materials, discussion, and awareness of the goals of attendees. For example, the instructor highlighted pertinent areas of the material knowing several attendees were candidates for taking a certification test. Additionally there was an option available to attend this class remotely via Webex. While I opted for classroom attendance it's great to know this capability exists for future reference. This was, for me, an exceptional training experience. I highly recommend including Intertech as a option for training needs.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.7 4.7 (189)

  • Pragmatic Coders

    Disruptive Technologies Software House

    Our long-term goal is to become the most effective software company in the world...

    Top Services:

    • Software Development
    • Product Design
    • UI/UX Design
    • Web Design
    • Blockchain
    • Show more
    Location
    Krakow, Poland
    Number of Employees
    50 - 99
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    2 Projects Listed

    Pragmatic Coders Services

    • Software Development
    • Product Design
    • UI/UX Design
    • Web Design
    • Blockchain
    • Mobile App Development
    • AI Development
    • VR/AR
    • IT Services
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • WebInterpret
    • AccentPharm
    • PhotoChain
    • Eldorado
    • EXCC
    • DiscoverCracow
    • Kitopi
    • Common Wealth
    • Atom Bank
    Data sourced from the agency's DesignRush profile

    Pragmatic Coders Reviews & Testimonials

    • Patryk Dąbrowski
      Patryk Dąbrowski Review from Google
      5.0 ★

      Patryk Dąbrowski's Review Sourced from Google

      Great contact with the Pragmatic Coders team. Even though they weren't able to participate in the project, I received very specific and helpful feedback from Wojtek, which really pushed my idea forward. Their professional and friendly approach – I highly recommend them.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.7 4.7 (38)

  • Coderio

    Accelerate Your Digital Transformation.

    Coderio helps companies of all sizes, from Fortune 500 to SMBs, across the Americas accelerate their digital transformation. Their services are tailored to accomplish objectives through expert knowledge, problem-solving, and streamlining deliverables...

    Top Services:

    • Software Development
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • AI Development
    • Show more
    Location
    Miami, Florida
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up

    Coderio Services

    • Software Development
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • AI Development
    • Mobile App Development
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • VISA
    • BBVA
    • Coca Cola
    • IBM
    • McDonalds
    • Aston Martin
    • Avon
    • Fedex
    • Cinemark
    • Santander Group
    Data sourced from the agency's DesignRush profile

    Coderio Reviews & Testimonials

    • Dailiet Roxana Chinea Pantaleon
      Dailiet Roxana Chinea Pantaleon Review from Google
      5.0 ★

      Dailiet Roxana Chinea Pantaleon's Review Sourced from Google

      I received excellent support from Coderio. They were dependable at every step, and their communication was consistently clear.

    • Jefry Saul Rauda Padilla
      Jefry Saul Rauda Padilla Review from Google
      5.0 ★

      Jefry Saul Rauda Padilla's Review Sourced from Google

      They are efficient, reliable, and always go the extra mile to deliver outstanding results. Personal muy capacitado.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.6 4.6 (30)

  • Directio

    We Code Success

    Directio is a global tech partner that brings together people, processes, and technology to code successnot just by building software, but by solving todays challenges and preparing businesses for whats next. With a unique blend of consulting, tailored development, and flexible collaboration models, we...

    Top Services:

    • Software Development
    • Software Testing
    • DevOps Consulting
    • IT Services
    • IT Compliance Solution
    • Show more
    Location
    Warsaw, Poland
    Number of Employees
    100 - 249
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $50,000 & Up

    Directio Services

    • Software Development
    • Software Testing
    • DevOps Consulting
    • IT Services
    • IT Compliance Solution
    • Cloud Consulting
    • Staff Augmentation
    • Managed Services
    • CRM Consulting
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Tacton
    • Coty
    • UCC Coffee
    • Exensor
    • Webropol
    Data sourced from the agency's DesignRush profile

    Directio Reviews & Testimonials

    • Joanna Cinkusz
      Joanna Cinkusz Review from Google
      5.0 ★

      Joanna Cinkusz's Review Sourced from Google

      Direct Communication provides excellent opportunities to work with clients in the international team, supporting a strong and professional work culture

    • Michał Krukowski
      Michał Krukowski Review from Google
      5.0 ★

      Michał Krukowski's Review Sourced from Google

      As an Employee I am amazed how good my life became since I joined that company

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (31)

  • KIS Solutions

    Tech too complex? We keep it simple.

    IT teams and business leaders are often at odds. This is in large part because technologists focus on technology rather than the underlying business issue. This company was founded to bridge that gap and to allow business owners the ability to fully leverage their tech stack. We offer near shore resources...

    Top Services:

    • Managed Services
    • IT Services
    • DevOps Consulting
    • Staff Augmentation
    • AI Development
    • Show more
    Location
    Bellingham, Washington
    Number of Employees
    100 - 249
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $50,000 & Up

    KIS Solutions Services

    • Managed Services
    • IT Services
    • DevOps Consulting
    • Staff Augmentation
    • AI Development
    • Software Development
    • Software Testing
    • CRM Consulting
    • Big Data Analytics
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • The After Auction
    • Unilever
    • Spaces
    • Plenum
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Tennis Inc

    Stop Guessing Start Growing. Websites Engineered for ROI

    B2B Website and Product Design and Development Agency | Stop Guessing. Start Growing. Websites Engineered for ROI...

    Top Services:

    • Web Design
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • Product Design
    • Show more
    Location
    Toronto, Canada
    Number of Employees
    Under 49
    Average Hourly Rate
    $275/hr
    Minimal Budget
    $50,000 & Up

    Tennis Inc Services

    • Web Design
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • SickKids Hospital
    • Accenture
    • Teranet
    • University of Toronto
    • Joyride
    • Validere
    • Canadian Bankers Association
    Data sourced from the agency's DesignRush profile

    Tennis Inc Reviews & Testimonials

    • Courtney Secord
      Courtney Secord Review from Google
      5.0 ★

      Courtney Secord's Review Sourced from Google

      Tennis was an outstanding partner during a critical phase of our website and CRM integration project. They stepped in at the 11th hour to support us on the Drupal side and quite literally helped save the day. Their team was professional, responsive, and incredibly quick to get up to speed, all while working within a very tight timeline. They brought the right expertise, calm confidence, and collaborative spirit exactly when we needed it most. Tennis was a pleasure to work with, and we are grateful for their support in helping ensure our website was successfully connected with our new CRM system.

    • Steve Pons
      Steve Pons Review from Google
      5.0 ★

      Steve Pons's Review Sourced from Google

      If you are looking to work with a savvy group of creative professionals, you couldn't pick a better company than Tennis. They understand what it takes to produce something virtual or real world that creates a memorable and visceral response. You won't regret working with them.

    • Michelene Maguire
      Michelene Maguire Review from Google
      5.0 ★

      Michelene Maguire's Review Sourced from Google

      I had the pleasure of working with the team at Tennis, and I can't recommend them highly enough! Their web design team is top-notch, showcasing impressive technical expertise that truly sets them apart. Additionally, their project management skills are fantastic, ensuring everything runs smoothly and efficiently. It's refreshing to collaborate with such a trustworthy and talented group. If you're looking for a reliable partner for your web projects, look no further than Tennis! --- Feel free to adjust any part of it to better fit your voice!

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    4.9 4.9 (28)

Explore Software Development Specializations

Explore all Software Development Companies

Popular Services

Why People Trust DesignRush

Rated 4.8 on Google and 4.7 on Trustpilot, the DesignRush Agency Directory is a reliable resource for finding top JavaScript development companies. We owe this to our executive selection team, which follows a strict screening process when featuring agencies on the platform, assessing key performance indicators, like portfolio, client reviews, and industry reputation.

DesignRush rating logos on Trustpilot and Google

Sources

DesignRush sustains a directory of over 30,000 agencies categorized by service category, location, expertise, and reviews. We build our database in two ways:

  • Our dedicated team of agency experts actively searches the web for top-performing companies. We then pull information from their websites, online presence, and client testimonials to verify their status and qualifications prior to listing.
  • The agencies listed get notified of their profiles on the website and they can choose to claim it or not, which suggests their availability for more collaborations.

Agencies can also reach out to DesignRush and must go through the verification process prior to being listed.

JavaScript Development Company Hiring Guide

What is a JavaScript development company?

A JavaScript development company is a company that develops and maintains web applications and software using JavaScript, a widely used programming language for front-end and back-end development. Its expert developers specialize in various JavaScript frameworks and libraries, such as React, Angular, Vue.js, Node.js, and jQuery, delivering intuitive and user-friendly websites.

Businesses often seek the help of a JavaScript development agency to address challenges, such as:

  • Lack of skilled in-house talent
  • Outdated legacy systems in place
  • Limited technical expertise to handle complex projects
  • Tight development timeline
  • Budget constraints in hiring an in-house development team
  • Limited foresight of industry trends and best practices

Hiring JS development services ensures that a business’ website, software, or application has a modernized user interface and provides a seamless user experience. By partnering with a reputable JavaScript development company, businesses can unlock the full potential of their online presence, enhance user satisfaction, and drive growth.

Success story

Our team of experts handpicked this case study to emphasize the benefits of hiring a reputable JavaScript development company to drive business growth:

  • Challenge: FINN, a German-based car company, struggled with organizing its operations and automating its processes as it expands to the US. However, its current subscription system relies on older technologies like manual spreadsheets and emails. The car company needed a partner to transform its internal tools to optimize workflows and make the app easy to navigate for users.
  • Solution: Cheesecake Labs helped FINN’s existing engineering team automate its processes. It also modernized its back end and internal tools by adding key features in its customer portal, allowing users and team members to easily and efficiently perform tasks like ordering or making account changes. Using Node.js, Typescript, and a PostgreSQL database, Cheesecake Labs transformed FINN’s US operations.
  • Results: The partnership resulted in an over 1,200+ increase in subscription for FINN. The internal tools built by Cheesecake Labs also generated significant usage, with a boost of 6,000+ page views per month.

What does a JavaScript development company do?

A JavaScript development company creates web and mobile applications, websites, and interactive user interfaces using JavaScript and its associated frameworks like React, Angular, and Node.js.

It provides full-stack development services, handling the client-side (front-end) and server-side (back-end) aspects of an application. They build scalable, responsive, and dynamic solutions tailored to client needs, ensuring cross-browser compatibility and optimizing performance.

Additionally, they may offer consulting, maintenance, and integration with other technologies to ensure a seamless user experience and continuous support for ongoing projects.

Their standard services include:

  • Web application development
    Developing interactive and dynamic websites that enhance user experiences
  • Custom software development
    Developing tailored software solutions to meet specific business needs
  • Front-end development
    Designing and building the user interface of web applications, making them visually appealing, and optimizing user interface and experience (UI/UX)
  • Back-end development
    Developing the server-side logic of web applications, handling data storage, retrieval, and processing
  • Cross-platform app development
    Creating mobile apps that work on both iOS and Android platforms
  • JavaScript consulting
    Providing expert advice and guidance on JavaScript development projects
  • JavaScript maintenance and support
    Ensuring the ongoing performance and security of JavaScript applications

Success story

This case study showcases the services that enables a JavaScript development agency to deliver exceptional software systems that can contribute to boosted productivity and operations:

  • Challenge: A financial services company wanted a simple, intuitive application to manage resources, tasks, and projects. The goal was to replace Jira and Excel templates with a more comprehensive solution tailored to its specific needs.
  • Solution: DevsData Tech Talent developed a custom-built enterprise resource planning (ERP) system with advanced features, such as automated notifications and report generation. It also features robust encryption and a comprehensive permission system powered by its JavaScript framework tech stacks, namely Vue.js, SSS, Node.js, and Express.js.
  • Results: The partnership resulted in a user-friendly ERP and PM system that perfectly aligned with the client’s needs. The software surpassed Jira in terms of security and processing capabilities, becoming a core tool for day-to-day operations across business departments.

What is the typical timeline for JavaScript development projects?

The typical timeline for JavaScript development projects can take 1 to 12 months, depending on the scope, project complexity, development tools, availability and access to tech stacks and tools, and team location.

To break it down, here’s a general web app development timeline that JavaScript development companies also deploy:

Phase Timeline

Initial planning and concept

  • Understanding the Concept
  • Market research
  • Requirement gathering
 1-2 weeks

Designing the web app

  • Wireframing and prototyping
  • UI/UX design
 3-4 weeks

Choosing the tech stack

  • Web application
  • Database and hosting
 1 week

Development phase

  • Front-end development
  • Back-end development
  • Integration
 8-12 weeks

Testing and quality assurance (QA)

  • Functional testing
  • Performance testing
  • Security testing
 3-4 weeks

Deployment

  • Launch
  • Server configuration
 1 week

Post-launch activities

  • Monitoring and maintenance
  • Updates and improvements
 Ongoing

How much does a JavaScript development agency charge for its services?

A JavaScript development agency typically charges between $100 and $250 per hour, depending on the scope, project complexity, seniority of developers, and location.

Here’s a table showing how JavaScript developers charge differently based on where they are based:

Location Price
Europe €55-€125
Central or Eastern Europe €30-€65
India $20-$50

Since JavaScript has different frameworks, costs also differ based on the developer’s expertise, specifically:

Framework expertise Price per hour
Node.js $75-$95
React $70-$90
jQuery $60-$80
AngularJS $85

On DesignRush, the top JavaScript development companies charge an average of $65/hour. 18.3% of JavaScript development agencies accept projects with a budget of under $1,000, offering basic development services. On the other hand, 4.7% of agencies require projects within a budget of over $50,000, offering custom JS development services.

Why should I hire a JavaScript development agency?

You should hire a JavaScript development agency for its technical expertise in the JavaScript programming language, from its core syntax to advanced frameworks and libraries. Beyond technical proficiency, a JavaScript development agency often strongly understands the broader web development ecosystem. This knowledge allows them to integrate JavaScript seamlessly with other technologies, creating cohesive and user-friendly applications.

Moreover, you should hire a JavaScript development agency because it:

  • Has seasoned programmers with proven expertise in JavaScript
  • Deploys efficient development processes to reduce development time
  • Mitigates common risks in the development process
  • Helps your website reach a wider audience by optimizing your website
  • Increases productivity for faster time to market
  • Improves customer experience through a well-designed and functional website

Success story

In this case study, our experts highlight the importance of choosing an agency with comprehensive skills and experience in JavaScript frameworks to transform innovative ideas into impactful applications:

  • Challenge: AskIris, a healthcare mobile application, wanted to address the challenge of hospitals’ inefficient supply rooms, where nurses and other medical professionals spend significant time searching for necessary supplies.
  • Solution: Designli developed the minimum viable product (MVP) by prioritizing easy-to-implement features using CSV workflows. To accommodate various hospital systems, the JavaScript development agency designed a customizable solution where hospitals can tailor the app to their specific needs, ensuring a seamless fit with their existing infrastructure. Designli used JavaScript frameworks like AngularJS and NodeJS, along with the cross-platform capabilities of Flutter to enable a scalable backend and a versatile app.
  • Results: The collaboration resulted in a successful working relationship between the AskIris and Designli teams, delivering the features needed for the app within budget and on time. With the successful deployment of the app, the client saw tangible improvements in a hospital’s supply room efficiency and streamlined inventory management.

How do I choose the best JavaScript development company for my business?

To choose the best JavaScript development company for your business, follow these steps:

  1. Define your project goals
    Clearly outline the objectives and outcomes you want to achieve with your project. Consider factors like target audience, functionality, and desired features. This will help you identify the right JavaScript development company to deliver your vision.
  2. Research potential companies
    Look for companies with a strong track record in JavaScript development. Use online resources, referrals, and industry listings, like DesignRush, to narrow your options.
  3. Evaluate technical expertise
    Assess the JavaScript development company’s proficiency in relevant frameworks, libraries, and technologies. Inquire about its experience with modern JavaScript features and best practices. Check if it has expertise in specific areas related to your project.
  4. Request for references
    Ask for references from previous clients to get firsthand insights into their experience working with the company. Ask about project outcomes, communication, and overall satisfaction. Online directories, like DesignRush, also offer comprehensive agency profiles with verified client feedback to help streamline your search.
  5. Shortlist companies that align with your needs
    Select five agencies with expertise that complement your project. Send a request for proposal (RFP) that outlines the scope of work, timeline, budget, and deliverables.
  6. Assess project management skills
    Understand the JavaScript development company’s project management methodologies and inquire about its tools and processes for tracking progress, communication, and risk management.
  7. Conduct interviews
    Interview key team members involved in your project to assess their technical skills and communication abilities. Discuss project expectations, timelines, and potential challenges.
  8. Test technical capabilities
    If possible, request a small-scale test project or proof of concept to evaluate the team’s skills and work ethic. This can help you assess their ability to deliver quality work and meet your expectations.
  9. Review collaboration style
    Assess the JavaScript development agency’s communication style. Consider its collaboration approach and willingness to involve you in the development process. Evaluate its ability to understand and address your feedback effectively.
  10. Evaluate pricing and terms
    Request detailed pricing information, including hourly rates, fixed-price contracts, or other payment models. Negotiate terms and conditions to ensure a fair and transparent agreement. Consider factors like payment terms, intellectual property rights, and post-launch support. Pricing and terms are important factors to consider when making your decision.
  11. Make an informed decision
    Weigh all factors, including technical expertise, project management, communication, company culture, and pricing. Choose a JavaScript development company that best aligns with your project goals and values.

Are you still looking for a JavaScript development company that can develop a user-friendly website for your business? Visit our Marketplace and share brief details about your project. Our team will recommend the five most suitable agencies for your development needs – for free.

How do I find the best JavaScript development agency on DesignRush that fits my budget?

To find the best JavaScript development agency on DesignRush that fits your budget, use filters to navigate the listing by hourly rate and minimum budget.

Here are some JavaScript development service suggestions based on our different pricing tiers:

Low Budget: 1k above
Mid Budget: 10k above
High Budget: 50k above

You can also filter agencies by location, company size, and hourly rate to customize your search according to your preferences and project needs.

What questions should I ask each JavaScript development company before hiring one?

The questions you should ask each JavaScript development company before hiring one include:

Its Relevant Background

  1. How long has your company been providing JavaScript development services?
  2. Have you worked with companies of similar size and scope to ours?
  3. Which JavaScript frameworks and libraries are you most proficient in?
  4. Can you share some of your most successful JavaScript projects?
  5. How large is your JavaScript development team?
  6. What is the average experience level of your JavaScript developers?
  7. What industry awards or recognition have you received for your JavaScript development services?
  8. Do you have an in-house UX design team?

Its Services and Processes

  1. What measures do you take to ensure code quality, readability, and maintainability?
  2. Do you follow specific coding standards or style guides?
  3. How do you identify and address performance bottlenecks in JavaScript applications?
  4. Do you use Continuous Integration/Continuous Delivery (CI/CD) pipelines for your development process?
  5. What quality assurance measures do you provide?
  6. How do you manage version control and code repositories?
  7. What security measures do you offer to protect a client’s data?
  8. How do you comply with data privacy regulations?

Related to Your Project

  1. How can you tailor the development of the application in a way that considers the target audience's behavior?
  2. What specific features or functionalities do you recommend for the application?
  3. Are there any third-party services or APIs we need to integrate with?
  4. Can you provide a timeline for completing our project?
  5. How will we communicate throughout the project, and how often can we expect updates?
  6. How do you handle unexpected delays or changes in project scope?
  7. What ongoing maintenance and support will you provide after the project is launched?
  8. How can you ensure that the application can scale to accommodate future growth?

What are the best JavaScript development companies in the US?

The best JavaScript development companies in the US are:

  • Zazz
    • 5.0 stars on DesignRush (95 reviews)
    • Top clients: JP Morgan, BBC News, PayPal, Harvard Innovation Labs
  • BitsWits
    • 5.0 stars on DesignRush (60 reviews)
    • 5.0 stars on Google (10 reviews)
    • Top clients: Grease Monkey, Beats, FitNow, Wisu
  • impalm
    • 5.0 stars on DesignRush (43 reviews)
    • 5.0 stars on Google (2 reviews)
    • Top clients: Taptin, AudiobookNow, Forte Payment System, GWU
  • Brandabl
    • 5.0 stars on DesignRush (42 reviews)
    • 5.0 stars on Google (12 reviews)
    • Top clients: Gran Coramino, Stanford University, Rich Tech Robotics, Lightspeed Venture Partners
  • Surf
    • 5.0 stars on DesignRush (39 reviews)
    • Top clients: Societe Generale, KFC, Burger King, Mars

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