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

135 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 ×
  • Invested in Your Success

    Tepia is a software company founded in 2012 with over 30 years of experience in web and mobile app development. We are a passionate and agile team of developers, designers, and strategists who are consistently pushing the boundaries of technology...

    Location
    Costa Mesa, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    2 Projects Listed
  • Marketing Agency That Blends Creative Branding With Emotional Advertising.

    Sagon-Phior is a full-service creative agency specializing in emotional marketing and brand growth...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed
  • Bringing ideas to life one step at a time.

    Kaizen Apps specializes in innovative application development, offering personalized consultations to turn your ideas into impactful digital solutions. Start your project with our expert guidance today...

    Location
    Vacaville, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed
  • Dreamers Inc.

    Verified Verified by the DesignRush team for authenticity and credibility.

    Your spark, our fuel

    Dreamers is a research, data science, and tech consultancy that specializes in building solutions for complex problems. We are based in sunny California, but we work remotely with clients from all over the world. We're engineer-owned and operated, meaning you'll get personal attention and quick answers...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    14 Projects Listed
  • Your Team for Everything in the Cloud

    AllCode offers a complete range of cloud and mobile application services. Our team of experienced engineers, architects, and developers will help you deliver with confidence...

    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • For Those Who Dare To Compete. Win. Dominate.

    Ad Victorem is a Los Angeles-based creative agency that combines award-winning creativity with business strategy to help challenger brands disrupt the status quo...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed
  • Scalable Intelligence

    ScalaCode is a leading AI software development company helping startups and enterprises build intelligent digital products. We specialize in Generative AI, AI Agents, LLMs, RAG, machine learning, cloud-native applications, and custom web and mobile software solutions...

    Location
    San Jose, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • Advance Your Business Through Technology.

    Exadel is a leading global consulting and engineering company that delivers technology transformation to help customers become digital leaders in their industries...

    Location
    Walnut Creek, California
    Number of Employees
    1000 & Up
    Portfolios Count
    6 Projects Listed
  • We Tailor-Make Delightful Engaging Digital Experiences.

    Atomic Studio is a Pasadena, California-based digital creative agency founded in 2012. The firm specializes in crafting tailored web and mobile experiences spanning responsive development, e-commerce, brand identity, managed hosting, and digital strategywith a strong emphasis on polished design and user-first...

    Location
    Arcadia, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    6 Projects Listed
  • High-Tech Bespoke Software Solutions

    We design, develop, and deliver high-tech bespoke software solutions for SME's, Enterprises, funded startups and ventures...

    Location
    Dublin, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed
  • Marketing For Digital Natives

    Grazitti Interactive, a global leader in digital innovation, offering AI-driven solutions to drive customer success. We specialize in Salesforce, marketing automation, analytics, and more, partnering with industry giants to deliver results-oriented solutions for clients...

    Location
    Mountain View, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    11 Projects Listed
  • Top Healthcare Product, Technology, & Venture Design Firm

    Sidebench is the top healthcare technology design and software engineering firm in the US. We combine strategy, design, technical architecture at every point of our process. We are known for delivering extraordinary business results...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    11 Projects Listed
  • One-stop scientific communication agency

    Nanobot Communication is an award winning one-stop scientific communication agency. We provide life science companies with marketing and communication strategies that are efficient, responsive, and centered on delivering a measurable return on investment (ROI)...

    Location
    San Diego, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    23 Projects Listed
  • Curl Ware, your one-stop shop for all your web development and design needs.

    Our team of experts focuses on delivering top-quality services to our clients, ensuring that they receive the best results. We aim to help businesses and individuals build their online presence through effective website development, optimization, and design. Our mission is to exceed our client's expectations...

    Location
    California City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Portfolios Count
    20 Projects Listed
  • Accelerate Velocity With Elite Engineers and Agile Experts.

    Distillery is a seasoned player in the field of nearshore software development, offering expertise and a robust process for building, scaling, and innovating technology solutions...

    Location
    Manhattan Beach, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    6 Projects Listed
  • 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
  • #1 Product Strategy, UX Audit, UX Design

    Product design & marketing experts driving growth. Founded in 2013, Wandr is an award-winning Product strategy & UX/UI design agency...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed
  • AI-First Company for Rapid Product Development

    We are global web3.0 Software engineering company making success stories for more two decades with highly motivated and experience teams and a proven agile framework. we prioritize the commercial goal of our customer deliver the highest business value. we are a renowned blockchain app development company in...

    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
  • AI-Native Product Engineering Company

    Developer Bazaar Technologies is a Top AI Development company building custom Mobile App & Software Development and specializing in building AI Solutions delivering mesurable outcome...

    Location
    Fremont, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed
  • Global Dev Team With Affordable Trusted Solutions

    Hikesiya is Silicon Valley-based software development company providing software solutions with a global team of Japan and Vietnam. Our team is a combination of skillful, enthusiastic engineers from Vietnam where the software industry is raidly growing and Japan where quality is meticulously managed in a...

    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    5 Projects Listed
  • Creating amazing software products!

    CognitiveClouds is a custom software product and consumer app development company with a reputation for excellence in creating tailored software solutions...

    Location
    Fremont, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed
  • An Enterprise AI Development Company

    Azilen Technologies is a prominent enterprise AI development company that takes pride in delivering exceptional AI, Data, and HRTech solutions to organizations seeking digital transformation...

    Location
    San Francisco, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    16 Projects Listed
  • Helping Tech Startups, Entrepreneurs and Enterprises Build World-Class Products

    We design, develop and deliver high-tech bespoke software solutions for SMEs, Enterprises, Funded Startups and Ventures...

    Location
    Dublin, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
  • Accelerating Progress Through Technology

    We can extend your team, expand your products and innovate your current technology...

    Location
    San Diego, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    2 Projects Listed
  • Cider Is the Leading Software Development Company in the San Francisco Bay Area.

    Cidersoft builds compelling apps and websites that will strengthen the success of your business...

    Location
    San Ramon, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
  • 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
  • Blending Creativity, Technology, and Strategy To Shape What Matters Most.

    Mattered is an award-winning digital marketing agency specializing in email & sms marketing, branding & design, development, and paid media. We are a people first agency, dedicated to putting our clients and their customers at the center of everything we do...

    Location
    Irvine, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    5 Projects Listed
  • GLOBAL TECH PARTNER FOR DIGITAL TRANSFORMATION AND SOFTWARE INNOVATION

    Jelvix is a global tech partner with 15+ years of experience, empowering industry leaders and startups. With 450+ IT experts, we drive digital transformation across Europe, North America, Nordics, and Southeast Asia...

    Location
    Los Angeles, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $70/hr
    Portfolios Count
    10 Projects Listed
  • Digital Marketing Advertising Agency

    Sansarahub, your trusted hub for comprehensive digital solutions. With over 13+ years of experience, we specialize in driving digital transformation to help your business grow, scale, and lead the market...

    Location
    California City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Portfolios Count
    9 Projects Listed
  • Award winning eCommerce Experiences

    Founded in 1993, Guidance is a commerce-focused digital agency based in Marina del Rey, California. The company specializes in B2C and B2B e-commerce solutions, backed by over 30 years of experience serving mid-market and enterprise retail and branded businesses. Guidance delivers site development, conversion...

    Location
    Manhattan Beach, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $170/hr
  • Put Over Twenty Years of Digital Marketing & Web Design Expertise To Work for You

    Mission Web Marketing is a Santa Barbara-based digital marketing agency offering custom strategies in SEO, paid advertising, web design, and analytics. With over two decades of experience, the agency helps clients increase visibility, drive traffic, and generate measurable ROI through tailored online...

    Location
    Santa Barbara, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $10,000 - $25,000
  • Unify Your Tech. Amplify Your Impact.

    Campaign Creators is a results-driven inbound marketing agency headquartered in Irvine (Greater San Diego), California. Since 2017, the agency has specialized in lead generation, digital optimization, and integrated marketing executionand supports B2B and e-commerce brands with scalable, data-informed...

    Location
    San Diego, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
  • From Application Development to Large-Scale Database Migrations – We’re Mission Ready.

    Equipped with expert, full-stack, agile teams, we help agencies, corporations and start-ups innovate and scale. And we do it on your terms, be it on the front lines or as a behind-the-scenes partner...

    Location
    San Francisco, California
    Number of Employees
    Under 49
  • Building Outstanding Websites

    WEBWORKS is a professional web design agency based in Los Angeles, providing stunning design without agency fees. We are dedicated to excellence and strive to create websites that look and operate to the highest standards. We offer this quality service at a fraction of the price and our dedication and hard...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
  • Shopify design, development and marketing agency.

    Digital commerce agency Coderapper focuses on growth and has locations in the US, Canada, and India. For meaningful customer experiences, we combine data-driven design, specialized development, and targeted growth strategy...

    Location
    Sunnyvale, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
  • High-Level Technology for Small and Large Business.

    ALFTEK offers full-service network infrastructure, system administration, network security, software development and other managed IT services. What's more, the company also integrates robust software solutions with cloud-based SaaS, PaaS and IaaS platforms for website and social & blog design...

    Location
    Concord, California
    Number of Employees
    Under 49
    Portfolios Count
    4 Projects Listed
  • Trusted by Leading Brands

    We work with startups and enterprise clients to create amazing mobile apps that users love, across iPhone, iPad, Android and the Web...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    2 Projects Listed
  • Revenue Rise

    Verified Verified by the DesignRush team for authenticity and credibility.

    Award-winning design. Systems that close deals.

    Revenue Rise builds award-winning websites and client acquisition systems for mortgage brokers and realtors across the US and Canada. 412+ clients. $863M+ in transactions influenced...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $97/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
  • Elevate Your People, Process, and Products.

    TDF (The Development Factory) is a Los Angeles based product and technology consultancy that empowers companies to design, build, and deliver software more effectively. By upskilling teams, embedding expert interim product leadership, and offering seamless augmentation services, TDF enhances clients internal...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    3 Projects Listed
  • Scaling New Heights

    At HyScaler, we're driven by a mission to be your trusted partner in achieving transformative business objectives. Our global vision focuses on harnessing cutting-edge technologies to craft sustainable, intelligent, and secure solutions...

    Location
    Santa Clara, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed
  • Innovating One Product at a Time!

    Kwanso, recognized as a top 5 mobile company by Silicon Review, is a team of expert designers, developers, machine learning engineers, and consultants dedicated to building exceptional digital experiences...

    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed
  • Litslink

    Verified Verified by the DesignRush team for authenticity and credibility.

    We Are Solving the Most Difficult Technology Challenges of Digital Transformation for Companies.

    Our fields of expertise: software development, mobile app development, web development, virtual reality development, app development, app modernization and optimization services, DevOps consulting services, software testing...

    Location
    Palo Alto, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed
  • Developing The Best Mobile Apps

    Appingine is a top app development company in the U.S., known for turning bold ideas into powerful mobile experiences. We create award-winning apps that consistently earn recognition and visibility on the App Store and Google Play. Our team is dedicated to delivering high-quality, user-focused solutions that...

    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed
  • 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
  • A WooCommerce Development Agency

    CoSpark, a leading WooCommerce development agency with 15+ years of experience, specializes in crafting exceptional eCommerce solutions, generating over $300 million in annual revenue for clients. Renowned for full-stack development, customizations, and ongoing maintenance...

    Location
    Irvine, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    5 Projects Listed
  • Deploy Dream Applications From Scratch

    Our team of over 200 IT experts and engineers harness the power of contemporary technologies, advanced frameworks, and innovative methodologies to deliver unmatched and top-notch outsourced services from India...

    Location
    Sunnyvale, California
    Number of Employees
    100 - 249
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed
  • Building the Future, Code At A Time

    Ambsan Digital is a full stack company specializing in high-performance web and mobile app development. We transform ideas into scalable digital products, offering end-to-end services from UI/UX design and custom web platforms to native and cross-platform mobile applications. Our expert developers focus on...

    Location
    California City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
  • Your online presence may be costing you customers. We fix that.

    Your online presence may be costing you customers. We fix that that with custom websites that convert and the SEO/AI Search strategies to get them noticed...

    Location
    Santa Monica, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Portfolios Count
    4 Projects Listed
  • Your Digital Growth Partner

    Sadja WebSolutions is a digital agency focused on creating custom websites, mobile apps and digital marketing to grow brands online. We help companies around the world increase their online presence and ROI through design, development and online marketing...

    Location
    Torrance, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000

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