Our expert analysts identified the top Ruby On Rails developers in California that can build high-performance websites, applications, eCommerce stores, service marketplaces, online libraries and more using the feature-rich software. Discover the best companies in the table below and filter listings by price, reviews and size to choose one that fits your business needs.

Best Ruby On Rails Development Companies in California

6 Companies - Rankings updated: August 26, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

United States × California ×
  • Bring your vision to life

    HDWEBSOFT is a leading software outsourcing company in Vietnam, known for its high-quality services, affordable pricing, and reliable team. With over 250 experienced engineers and a decade of expertise, HDWEBSOFT has helped businesses of all sizes from around the world to develop and launch successful...

    Location
    Pasadena, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    HDWEBSOFT Services

    • Web Development
    • eCommerce Development
    • IoT
    • Mobile App Development
    • Software Development
    • Big Data Analytics
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • vTech
    • Toku
    • Logi
    • TripScout
    • PushPress
    • Trustify
    • SkyLab
    • Speek
    • Instantly
    • ANX
    Data sourced from the agency's DesignRush profile

    HDWEBSOFT Reviews & Testimonials

    • Jason Harvison
      Jason Harvison CEO at Elevate
      5.0

      Web Development Review from Jason Harvison

      HDWEBSOFT did a fantastic work that aided the client in expanding their business, particularly in terms of growing website subscriptions. The project began on schedule and opened up a lot of opportunities for the business.

    • David Zalik
      David Zalik CEO at Greensky
      5.0

      Web Development Review from David Zalik

      Using a smooth user interface, HDWEBSOFT effectively updated our landing page, enticing visitors to sign up for the product's waitlist. The staff provided a customized strategy and was incredibly responsive, driven, and enthusiastic. They also used ClickUp for project administration.

    • Max Levchin
      Max Levchin Co-Founder & CEO at Affirm
      5.0

      Mobile App Development Review from Max Levchin

      We've partnered with HDWEBSOFT who have created our app using .NET. The feedback from our customers we've received has been overwhelmingly good. We had heard positive things about the idea even before we released the app, so it's encouraging to see those comments continue once it has been out. HDWEBSOFT was set up from the start. The design team was outstanding; they completed the job on schedule and within our allocated budget. They followed a well-defined procedure that was in place.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Enterprise AI Solutions | Scalable . Flexible. Sustainable

    Seasia Infotech is a global AI-powered digital engineering company with 25+ years of experience delivering custom software, AI solutions, cloud applications, mobile apps, and enterprise platforms. We help businesses accelerate innovation, improve efficiency, and drive digital transformation...

    Location
    Emeryville, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    54 Projects Listed

    Seasia Infotech Services

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Big Data Analytics
    • Cloud Consulting
    • Staff Augmentation
    • Cybersecurity
    • IoT
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Adani Group
    • Flipkart
    • Harley-Davidson
    • Microsoft
    • MainStreet Equity Corp
    • HDFC Bank
    • Swaraj
    • Innopharma Education
    • Renault
    • Puda
    Data sourced from the agency's DesignRush profile

    Seasia Infotech Reviews & Testimonials

    • cornelia verden
      cornelia verden Web Developer at Cornelia Verden LLC
      5.0

      eCommerce Development Review from cornelia verden

      This Company is AMAZING, they are very professional. We hired them to build my website, and they did an EXCELLENT job. They continuously communicated with me during the development phase. If you want a beautiful, well-designed, professional website that has optimum functionabilty, You must go with Seasia Infotech. You can always expect excellent quality services from the professionals at Seasia Infotech.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Result-Driven Digital Solutions Since 2005

    We provide results-driven solutions in the Digital field since 2006. While working with us you will receive the expertise and knowledge from our Digital Agency and highly qualified resources from our Research & Development Competence Centre...

    Location
    Escondido, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed

    SEOTM Services

    • Web Development
    • Web Design
    • Mobile App Development
    • SEO
    • PPC
    • CRM Consulting
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Soudal
    • Servier
    • inbus.ua
    Data sourced from the agency's DesignRush profile

    SEOTM Reviews & Testimonials

    • Vitaliy Dyachenko
      Vitaliy Dyachenko CEO and Founder at UppLabs
      5.0

      SEO Review from Vitaliy Dyachenko

      We were lucky to find SEOTM, who appeared to be truly professional and experienced guys! The scope of their work included our website audit, comparison, and monitoring of our core competitors' activities, creating a semantic core, and planning tasks for content creation. Since we started working with SEOTM, our positions in Google raised and we started to get more traffic from our target countries and segments. Amazing work and a great team! Hope to work with them again!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • We Deliver Creativity

    Devoq is the go-to destination for cutting-edge design solutions. As a premier design agency, we specialize in helping businesses achieve breakthroughs with awe-inspiring visuals that leave a lasting impact...

    Location
    Ontario, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $14/hr

    DevoqDesign Services

    • Design Services
    • Web Design
    • UI/UX Design
    • WordPress Website Design
    • Product Design
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Adberry
    • VR-Hours
    • SFW-Studio
    • Cube
    Data sourced from the agency's DesignRush profile

    DevoqDesign Reviews & Testimonials

    • Anne Walker
      Anne Walker IT Director at Marines' Memorial Association
      5.0

      Web Design Review from Anne Walker

      Devooq Design has not only redesigned our website with updated navigation and branding but also maintains it diligently while tracking web performance. Their redesign effectively communicates our organization's array of services to the public, contributing to a notable increase in RFPs received through the site. Devoq Design excels not only in technical proficiency but also in effective communication, showcasing a solutions-focused and accessible team dedicated to our success.

    • Josh Kurtz
      Josh Kurtz Director Corporate Real Estate at Evernorth Health Services
      5.0

      UI/UX Design Review from Josh Kurtz

      Collaborating with Devoq Design in the realm of UI/UX design was truly a fantastic experience. Their commitment to excellence shines through in every aspect of their work. From the initial concept to the final implementation, they consistently strive to produce high-quality designs that exceed expectations. What sets Devoq Design apart is their meticulous attention to detail in UI/UX design. They understand the significance of the finer elements and nuances that contribute to a seamless user experience. Whether it's the placement of interactive elements, the color palette, or the intuitive navigation, Devoq Design pays close attention to every little detail to ensure a visually appealing and user-friendly design. Their expertise in UI/UX design is evident in their ability to create intuitive interfaces that engage and delight users. Devoq Design understands the importance of user-centric design principles, ensuring that the end product not only looks stunning but also prioritizes usability and functionality.Working with Devoq Design, it becomes evident that they possess a deep understanding of the intricacies of UI/UX design. Their passion for their craft and their commitment to delivering exceptional results are truly commendable

    • Ian McNaught
      Ian McNaught Chief Executive Officer at Pearl & Dean Ireland
      5.0

      UI/UX Design Review from Ian McNaught

      When our company needed a complete UI/UX overhaul to capture our brand's playful spirit, Devoq Design Interactive was the perfect partner. After working with several web firms, their team stood out for quickly aligning with our vision and executing our tight, detailed requirements with precision. Throughout the redesign process, Devoq Design Interactive demonstrated exceptional responsiveness, flexibility, and an ability to translate our needs into a cohesive, engaging digital experience. The end result is a website that not only looks great but also effectively represents our unique personality and voice. We're thrilled with the final product and grateful to have found a web development partner that truly understands the importance of blending functionality and fun. Devoq Design Interactive's collaborative approach and commitment to delivering on our goals have made them a valuable asset to our business.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Software, Mobile App, Games Development Company.

    The App Founders is a recognized leader in the mobile app development industry that excels in building mobile apps to upscale your business and bolster your customer retention rate. Well transform your idea into a market-ready application on schedule and within budget...

    Location
    Santa Clara, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    16 Projects Listed

    The App Founders Services

    • Mobile App Development
    • Software Development
    • eCommerce Development
    • Product Design
    • CRM Consulting
    • ERP Consulting
    • VR/AR
    • Blockchain
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Airhme
    • Bally
    • Rideo
    • Your Wish On
    • Dragon Force Ninja
    • Tamkeen Care
    • Color Jumper
    • Stacker Cracker
    Data sourced from the agency's DesignRush profile

    The App Founders Reviews & Testimonials

    • Dustin Wheeler
      Dustin Wheeler Review from Google
      5.0

      Dustin Wheeler's Review Sourced from Google

      it was such a pleasure working with App Founders and just how easy and professional they were. I quickly realized how the industry is full of thirsty, needy bots and scammers I’m trying to get your attention, but tons of unsolicited phone calls and texts. Dealing with these guys was a breath of fresh and definitely showed up in value above all the rest.

    • Munna Alam
      Munna Alam Review from Google
      5.0

      Munna Alam's Review Sourced from Google

      Got to say, The App Founders really impressed me! They totally nailed the design for my mobile game. Can't wait to team up with them again to make and promote the game. Definitely recommending them to anyone looking for top-notch game development services!

    • berry paul
      berry paul Review from Google
      5.0

      berry paul's Review Sourced from Google

      The App Founders is able to develop console games and deliver them on time. I have worked with them for a year now and they have never missed a deadline, which is important to me as a developer. The team is friendly, knowledgeable and always willing to help if you need anything.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Inform. Persuade. Remind.

    EPRIZ 7 helps restaurants, healthcare providers, furniture stores, startups, local businesses, and small business to medium-sized companies grow through digital advertising, websites, and connected TV advertising. Marketing services in Los Angeles, including SEO, social media, and branding...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed

    EPRIZ 7, LLC Services

    • Digital Marketing
    • Social Media Marketing
    • SEO
    • Advertising
    • PPC
    • Branding
    • Package Design
    • Web Design
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Altece Design
    • Amparo's Home Furniture
    • Stereo1
    Data sourced from the agency's DesignRush profile

Receive Free Proposals

For your project

1

Specify your budget, timeline and project requirements

2

Our experts curate a list of up to 5 most qualified candidate agencies

3

We connect you with them so you can choose the most suitable partner