Discover the top React.js Development Companies for Your Project

9 Companies - Rankings updated: April 02, 2026

We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.

United States × Florida × St. Petersburg ×
  • You Dream IT - We Dev IT

    𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 is one of the main areas of DevIT work. Our team has extensive knowledge of various technologies. This allows us to create fast, flexible, responsive, attractive, and user-friendly stores and Shopify apps.  [... see all DevIT reviews ]
    Location
    St. Petersburg, Florida
    Number of Employees
    100 - 249
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    29 Projects Listed

    DevIT Services

    • eCommerce Development
    • Web Development
    • Software Development
    • IT Services
    • Web Design
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    • IT Compliance Solution
    • WordPress Website Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • WeatherNation
      Website Development Project for Media & Communications Company WeatherNation
    • Real America's Voice
      Website Development Project for Media & Communications Company Real America's Voice
    • AfterSell Post Purchase Upsell | Shopify App | Built for Shopify Badge
      Shopify Project for eCommerce Company AfterSell Post Purchase Upsell | Shopify App | Built for Shopify Badge
    • UpCart - Slide Cart Drawer
      Shopify Project for eCommerce Company UpCart - Slide Cart Drawer
    • UpsellPlus Checkout Upsells | Shopify App
      Shopify Project for eCommerce Company UpsellPlus Checkout Upsells | Shopify App
    • Karstgoods
      eCommerce Development Project for eCommerce Company Karstgoods
    Comprehensive analysis done by DesignRush Agency Experts.

    DevIT Reviews & Testimonials

    • Volodymyr Andrushenko
      Volodymyr Andrushenko CRO at Genius Software
      5.0
      eCommerce Development Review from Volodymyr Andrushenko

      We collaborated with DevIT Group to develop a bespoke commerce platform for wellness services and products. While our team focused on backend development, DevIT took responsibilities of design and frontend delivery. They approached the work calmly and practically, keeping the interface clean and aligned with the product logic. QA was handled jointly, which helped avoid surprises closer to launch. Overall, the cooperation felt balanced and easy to maintain throughout the project.

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    • Iryna Seleman
      Iryna Seleman Engagement Manager at Cortance
      5.0
      Web Development Review from Iryna Seleman

      We worked with DevIT Group to strengthen our team on a Shopify project for a lifestyle brand. They provided two skilled developers who joined the work and handled the technical tasks with confidence. The cooperation was easy, the communication stayed clear and the developers delivered what was needed without delays. The support they provided helped us move faster and meet our clients expectations. We were pleased with the experience.

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    • Taras Oliinyk 🇺🇦🇪🇺
      Taras Oliinyk 🇺🇦🇪🇺 CEO & Founder at Taras Oliinyk
      5.0
      Web Development Review from Taras Oliinyk 🇺🇦🇪🇺

      We worked with DevIT Group on the development side of a shared project. Their team handled the technical part confidently, keeping the process organized and consistent. The final product was stable, fast, and easy to use. Communication was open, and the team quickly responded to all updates. It was a professional and reliable partnership that delivered great results.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • AfterSell by Rokt | Shopify App
    • Karstgoods | Website & WebApp
    • Heliguy | Website & WebApp
    • UpsellPlus Checkout Upsells | Shopify App
    • UpCart - Slide Cart Drawer | Shopify App
    • OutSell Cross Sell & Upsell | Shopify App
    • Antla | Shopify App
    • ConvertMax PostPurchase Upsell | Shopify App
    • Stored microsites on demand | Shopify App
    • Push Down & Hide Out Of Stock | Shopify App
    Data sourced from the agency's DesignRush profile
  • IT Outsourcing & Staff Augmentation since 2007

    Innowise provides diverse services, including IT consulting, digital transformation, Java development, UI/UX design, and more.  [... see all Innowise Group reviews ]
    Location
    St. Petersburg, Florida
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    9 Projects Listed

    Innowise Group Services

    • Software Development
    • Mobile App Development
    • VR/AR
    • eCommerce Development
    • DevOps Consulting
    • Web Design
    • Blockchain
    • AI Development
    • ERP Consulting
    • Big Data Analytics
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Innowise Group Reviews & Testimonials

    • Richmond Dugger
      Richmond Dugger Founder / CEO at Lavarient Holdings, Ltd.
      5.0
      Blockchain Review from Richmond Dugger

      Working with Innowise was a pleasure. They possess an excellent breath and depth of service and their technical staff are outstanding. Their business analysis and project management staff was very communicative and helped to keep our project moving along on time an on budget. I would highly recommend them for future projects.

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    • Tobias Weishaupt
      Tobias Weishaupt Managing Director at Producto Check GmbH
      5.0
      Mobile App Development Review from Tobias Weishaupt

      We worked with a Product Owner from Innowise to relaunch our website and redesign our mobile apps in just ten months. With his help, we were able to deliver in quality and on time.

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    • Bruce Elliott
      Bruce Elliott Head of Product at Definely
      5.0
      Software Development Review from Bruce Elliott

      Great outsourcing firm. Strong technical resources and flexible in finding candidates based on ever-changing market demands on our products. Highly recommend using them for any of your technical and non-technical needs.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • OneStop Pro
    • N:aip (Die care manager)
    • NFT Pro
    • IMT
    • CoreLedger
    • Tieto
    • Definely
    • Topcon
    • HAYS
    • NTT Data
    Data sourced from the agency's DesignRush profile
  • We Treat the Creation of Your Product Like Ours.

    Let's start building your game changing e application tomorrow! Working with us, you get a fast start, high development speed, and a top-quality product.  [... see all Lomray Software reviews ]
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    Lomray Software Services

    • Mobile App Development
    • Web Development
    • Software Development
    • Web Design
    • UI/UX Design
    • Software Testing
    • Staff Augmentation
    • IT Services
    • Product Design
    • eCommerce Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

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    • BDC
      Website Development Project BDC
    • EURO2MOON
      Website Development Project EURO2MOON
    • WifiMap
      Website Development Project WifiMap
    Comprehensive analysis done by DesignRush Agency Experts.

    Lomray Software Reviews & Testimonials

    • Eoghan Bradshaw
      Eoghan Bradshaw Full Stack Developer at Wing Studio
      5.0
      Web Design Review from Eoghan Bradshaw

      Thanks to Lomray Software, we received positive feedback for our new interactive website, and the users were thrilled by it. We were impressed by the vendor's quality control and standards. We also lauded the vendor's hands-on project management and effective communication.

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    • Anonymous Founder & CEO at BICC
      5.0
      UI/UX Design Review from Anonymous

      I had the pleasure to work with Lomrey Software when we used their services to develop the corporate identity for our association. Their team of talented designers quickly responded to all our requests, demonstrated a creative approach, and did a marvelous job. We were very satisfied with their work.I can definitely recommend Lomrey Software as a great design firm.

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    • Warren Hull
      Warren Hull Owner at Listing Plus LLC
      4.8
      Node.js Review from Warren Hull

      StuntListing is our flagship service and it sorely needed a rebuild. We tried three different programmers/agencies before Lomray came onboard. They worked with us to establish what code could be saved and what needed to be rewritten to move forward. We established a very consistent meeting schedule to go over completed and upcoming tasks. They were thorough and upfront with how the work was going. It's been a pleasure to work with them, and we hope to work with them more now and in the future.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Kety app
    • BDC consulting
    • WingStudio
    • WifiMap
    • PressoNetwork
    • Miniut
    Data sourced from the agency's DesignRush profile
  • Software Development and Consulting Company

    Timspark is an innovative software development company that endeavors to deliver the highest quality work to clients who look to address their challenges with custom technology. Our one-of-a-kind business model fuels and cultivates fully-fledged independent development teams and motivates each engineer to  [... see all Timspark reviews ]
    Location
    St. Petersburg, Florida
    Number of Employees
    100 - 249
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    35 Projects Listed

    Timspark Services

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

    Clients and Projects

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    • Computer Vision Solution for Effective Advertising Placement
      eCommerce Development Project Computer Vision Solution for Effective Advertising Placement
    • Mobile Game Development Services for Unity-based Projects
      Game App Development Project for Gaming Company Mobile Game Development Services for Unity-based Projects
    Comprehensive analysis done by DesignRush Agency Experts.

    Timspark Reviews & Testimonials

    • Evelyn Sinclair
      Evelyn Sinclair COO at Nexus Dynamics Solutions
      5.0
      Software Development Review from Evelyn Sinclair

      I had an incredibly positive experience with their services and the final product they delivered. It was a successful collaboration as I connected with investors who were impressed and interested in investing in the project. Throughout the process, they consistently provided solid and impressive work, earning them a five-star rating from me. Their work consistently showcased solid and impressive results, demonstrating their expertise and commitment to delivering excellence. There isn't anything specific that I would suggest for improvement. My experience with them was overwhelmingly positive, with no notable drawbacks or areas for enhancement.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Android ID scanner & secure transaction app
    • Mobile app harnessing Blockchain technology
    • Mobile app for active travelers
    • Sales & marketing analytics for a pharma
    • Electronic market analyses for a European retail
    • Loyalty card payment app
    • Unveiling history Augmented reality travel app
    • Corporate system to a cloud-based solution
    • Streamlined web-based HRM ecosystem
    Data sourced from the agency's DesignRush profile
  • Design. Market. Grow

    Your complete partner in Digital Growth.  [... see all Quantive Digital reviews ]
    Location
    St. Petersburg, Florida
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    12 Projects Listed

    Quantive Digital Services

    • Digital Services
    • Design Services
    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Web Design
    • Creative Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Web Design & Development
      Website Development Project for Real Estate Company Web Design & Development
    • Brand Design
      B2B eCommerce Project for Boutique Company Brand Design
    • Web Design & Development
      WordPress Website Design Project for Travel Company Web Design & Development
    Comprehensive analysis done by DesignRush Agency Experts.

    Quantive Digital Reviews & Testimonials

    • Romelo Roman
      Romelo Roman COO at Top Guy Marketing
      5.0
      Design Services Review from Romelo Roman

      Working with Quantive Digital has been amazing!!! They're great at what they do. When I work with them, I'm at ease knowing that the project will get done in a timely manner and to our standard. Their communication is 10/10, I can always count on getting a quick reply back from them. I've been working with them for quite some time now and I would absolutely recommend them!!!

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Clience
    • Watson Creative
    • Ink A Pixel
    • Austech Media
    Data sourced from the agency's DesignRush profile
  • We build mobile apps, web platforms & AI workflows for organisations doing good in the world.

    3 Sided Cube is a global mobile app and digital development company with a passion for Tech For Good, championing the genius over the generic to build life-saving, life-changing digital solutions.  [... view 3 Sided Cube profile ]
    Location
    St. Petersburg, Florida
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    5 Projects Listed

    3 Sided Cube Services

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • Digital Services
    • UI/UX Design
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    3 Sided Cube Reviews & Testimonials

    • Si Muddell
      Si Muddell Review from Google
      4.0

      Si Muddell's Review Sourced from Google

      Fantastically positive and driven team who on every interaction you just know care deeply about a) what they do b) what they deliver and c) ultimately the experience the end user will have.Hugely impressed with their personal, creative and energy driven approach at the pitch stage, I commissioned 3SC to help us better scope an app. Their task was to take an in-house developed app prototype, and turn it into a fully fledged technical specification with user stories, MoSCoW prioritisation, costs, and an updated look and feel; all done with audience need at the heart.Myself and the wider team have nothing but very good things to say about 3SC. When reflecting on an agency to work with, loads say they can do it, some can actually do what they say they can do, even less do it in the spirit of real partnership and mutually respect/drive. 3SC do all of these excellently. I highly recommend them.

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    • Oliver Morrison
      Oliver Morrison Review from Google
      5.0

      Oliver Morrison's Review Sourced from Google

      A passionate team of insanely talented experts, producing industry leading technology for good causes. Highly recommend.

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    • Kev Borrill
      Kev Borrill Review from Google
      5.0

      Kev Borrill's Review Sourced from Google

      Great Digital agency with a passion for making great mobile apps in the Tech for good industry

      Show more
    Reviews verified by DesignRush and sourced from the agency's profile
    • American Red Cross
    • Surfers Against Sewage
    • Omaze
    • Vodafone | Glastonbury Festival
    • LUSH
    • Global Forest Watch
    • The World Resources Institute
    • University Of Bristol
    • GDPC
    • Wonderbly
    Data sourced from the agency's DesignRush profile
  • Launching Valuable Solutions

    Cyfrania serves as a professional software development consultancy, dedicated to assisting our clients in enhancing their applications and staying at the forefront of technological advancements. Our team of engineers provides ongoing, valuable insights, fostering a continuous exchange of ideas and ensuring  [... view Cyfrania profile ]
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    Cyfrania Services

    • eCommerce Development
    • Mobile App Development
    • Software Development
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • MontiPlanet: Online Platform for Purchasing Montessori products
      eCommerce Development Project MontiPlanet: Online Platform for Purchasing Montessori products
    • Luxury Therapist: Small Business App Rescue
      Application Modernization Services Project Luxury Therapist: Small Business App Rescue
    • BahamaGo: Travel Booking Platform
      Ruby on Rails Project BahamaGo: Travel Booking Platform
    • Visdeal: Warehouse Automation Tool
      Ruby on Rails Project Visdeal: Warehouse Automation Tool
    Comprehensive analysis done by DesignRush Agency Experts.
    • Plei
    • MontiPlanet
    • Tackle Group Warehouse
    Data sourced from the agency's DesignRush profile
  • Growth isn't for everyone. We partner with brands that refuse to blend in.

    Projectsity aims to provide affordable marketing and branding solutions with complete satisfaction and security, making lives while ensuring safe business operations and maximum profits & ROIs.  [... view Projectsity profile ]
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Portfolios Count
    5 Projects Listed

    Projectsity Services

    • Branding
    • Web Design
    • Web Development
    • Mobile App Development
    • Market Research
    • Digital Marketing
    • Advertising
    • eCommerce
    • Graphic Design
    • Business Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Branding For Lisa Bolton Photos
      Web Design Project Branding For Lisa Bolton Photos
    Comprehensive analysis done by DesignRush Agency Experts.
    • Pan De Vida HVAC
    • We Care Alot Home Healthcare Agency
    • Fresh Paint Pro LLC
    • Lion Strength Solutions
    • Lisa Bolton Photos
    • Reliance Realty Services
    Data sourced from the agency's DesignRush profile
  • Precision Illuminated

    Light Domain Studio brings imagination to life through high-end CG, immersive AR/VR experiences, and digital storytelling. We merge art and technology to craft visuals and worlds that inspire, engage, and endure.  [... view Light Domain Studio profile ]
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $10,000 - $25,000

    Light Domain Studio Services

    • VR/AR
    • Video Production
    • Digital Services
    • AI Development
    • Mobile App Development
    • Software Development
    • Graphic Design
    • Reputation Management
    • Digital Strategy
    • Public Relations
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Carnival
    • Konngsberg
    • Nike
    • Snapchat
    • Wavin
    Data sourced from the agency's DesignRush profile

Frequently Asked Questions

What are the typical React.js development services?

React.js development companies provide end-to-end services that span the entire software development lifecycle, from strategy and design to development and launch. Core services include: 

  • React.js consulting: Guiding businesses on building and optimizing their React applications through component selection, architecture design, and roadmap development. 
  • Custom React.js development: Engineering applications tailored to a business's specific needs, goals, and existing IT infrastructure, and typically include web design and web development.  
  • UI/UX design: Delivering intuitive interfaces, clear user flows, and standardized design systems that align with a brand and its target users. 
  • API integration: Connecting the React frontend to back-end systems, third-party tools, and external data sources to support seamless functionality and user experiences. 
  • Platform migration: Rebuilding or migrating legacy frontends to React to improve maintainability, usability, and performance, often with minimal disruption. 
  • Maintenance and support: Providing post-launch monitoring, debugging, performance optimization, and technical support. 

Many React.js developers also offer specialized expertise, including SaaS products, web application development, customer portals, eCommerce solutions, and minimum viable products (MVPs).  

Some React.js development companies may also offer digital marketing services, such as content marketing, search engine optimization (SEO), and branding. 

What is the difference between React and React Native?

The main difference is that React is used to build web user interfaces, while React Native is for developing mobile applications. Here are more details on their differences: 

 ReactReact Native
Primary platformsWebsites, web applications, and single-page applicationsiOS and Android mobile apps
Tech baseJavaScript/TypeScript with React for web UIJavaScript/TypeScript with React, rendered through native UI components
Best forBusinesses building browser-based products, customer portals, dashboards, eCommerce sites, and SEO-focused web experiencesBusinesses building cross-platform mobile apps for both iOS and Android with shared logic and accelerated development time
ExamplesFacebook, Instagram, Netflix webMicrosoft Teams and Shopify

What are the typical React developer tools?

React.js developers typically choose their stack based on a client's product goals, technical requirements, and existing systems. For example, they may use Formik for complex forms and validation, Storybook for developing and testing components in isolation, and MUI for production-ready UI components and design systems. 

Common React developer tools: 

  • Core front-end: React, JavaScript, TypeScript, HTML, CSS 
  • State and data fetching: Redux, TanStack Query 
  • UI and styling: Tailwind CSS, MUI, Storybook 
  • Testing: Jest, React Testing Library, Cypress 
  • Back-end options: Express, Laravel, Rails, ASP.NET 
  • Databases and infrastructure: PostgreSQL, SQL Server, Redis 

Can React.js developers build AI-powered features into web applications?

Yes. A React.js developer can build AI-powered features into a web application by integrating model APIs, SDKs, and AI workflows into the product experience.   

Depending on your goals, this may include providers such as Google Gemini or Anthropic Claude, along with React developer tools, like Vercel's AI SDK for building chat, search, recommendation, and automation experiences in React-based apps. 

These companies can help you build features such as: 

  • Personalized content and recommendations based on user behavior 
  • Chatbots and virtual assistants for real-time customer support 
  • Smart search with autocomplete, semantic search, and related-result suggestions 
  • AI-assisted dashboards that generate summaries, reports, forecasts, and insights from business data 

When should you hire a React.js development company instead of using an in-house team?

The right choice depends on your project goals, internal capacity, timeline, and need for control. You may want to hire a React.js development company if: 

  • You have a short-term or time-sensitive project, but your internal team is already at capacity. 
  • You do not have the specialized expertise required for the project, such as React architecture, performance optimization, migration, or AI feature integration. 
  • You need to accelerate delivery without hiring and onboarding a full internal team. 
  • You want access to a broader range of skills, such as design, front-end engineering, QA, and post-launch support, through a single external partner. 
  • You need temporary support to fill skill gaps or expand delivery capacity. 

Use an in-house team when: 

  • The application is a core business product that requires long-term ownership and deep institutional knowledge. 
  • The project involves highly sensitive systems, proprietary logic, or strict security and compliance requirements. 
  • You need close day-to-day collaboration, faster internal feedback loops, and direct control over priorities. 
  • The product requires continuous iteration and alignment with multiple internal teams over time.