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.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

Goji Labs
VerifiedVerified by the DesignRush team for authenticity and credibility.AI LeaderRecognized for strong visibility across AI-powered search and answer engines.+1Award WinnerRecipient of a Best Design Award for outstanding work.We Define the Right Build Before We Start It.
Goji Labs is a web development company with 12+ years of experience, 500+ products launched, and 25M+ users supported, building on WordPress, Webflow, React, Next.js, and Node.js for clients including KCRW and Hard Assets Alliance. Its clients have raised $1B+. A strong fit for startups and growth-stage...
Top Services:
- Mobile App Development
- Software Development
- UI/UX Design
- AI Development
- Web Design
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 23 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsGoji Labs Services
Data sourced from the agency's DesignRush profileWorld Wildlife Fund K-ID City of Los Angeles TGS Kangarootime World Health Organization Prediction Strike American Kennel Club Youth on Their Own Root Insurance
Goji Labs Reviews & Testimonials

Web Design Review from Michael Krone
We partnered with Goji Labs for a complete app build, and they delivered exactly what we needed. Their team handled the entire project professionally and with great care from start to finish. I would highly recommend Goji Labs to anyone seeking a skilled and dependable development partner.

Software Development Review from Wilson Rapp
We brought Goji Labs on board for a major migration project, and the entire experience was smooth and well-managed from start to finish. We could not be happier with the results. Their expertise gave us confidence throughout the process, and we would not hesitate to work with them again.

Mobile App Development Review from Sheila Reddy
As a founder with just an idea and a business model, I needed a partner who could turn that vision into a real product. Goji Labs guided me through every step of the process and built exactly the app we needed. Their expertise and patience made the entire journey manageable and rewarding.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAI is easy. Systems are hard. We build systems.
AI is easy. Systems are hard. We build systems...
Top Services:
- Software Development
- AI Development
- Staff Augmentation
- Cloud Consulting
- Software Testing
- Show more
- Location
- Irvine, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 20 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAristek Systems Services
Data sourced from the agency's DesignRush profileSoftware& IT Industry Energy Industry Education Industry Entertainment Industry Health Care Industry Transportation & Logistics Industry
Aristek Systems Reviews & Testimonials

Web Development Review from Undisclosed
Aristek Systems developed, tested, and released a new website for an e-commerce development company. The team utilized Ruby on Rails, Elixir, Phoenix Framework, JavaScript, GraphQL, PostgreSQL, and AWS. Aristek Systems was able to deliver a fully functional software, much to the client's delight. The team was highly communicative, and internal stakeholders were particularly impressed with the vendor's professionalism and attention to detail.

Web Design Review from Undisclosed
Aristek Systems has redesigned the UI/UX of an existing educational digital platform. The team has refreshed the interface and added new features to deliver a more comprehensive experience for users. The client is satisfied with Aristek Systems' work and performance. The team delivers within the specified timeframe and manages the project seamlessly. Moreover, they stand out for their availability, problem-solving capabilities, and amazing work culture; they're easy to work with.

Software Development Review from Anonymous
I had the privilege of working with Ruslan and his team at Aristek for the past three years. It is hard to find that level of dedication in an offshore vendor/partner but Ruslan and the Aristek team deliver it. I would highly recommend Ruslan and Aristek to anyone needing an expert level partner in EdTech and SaaS platform development.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsEngineering peace of mind
Vention is an ISO 27001-certified web development company with 20+ years of experience and 500+ clients, building across .NET, Java, Python, Node.js, Ruby on Rails, and Django for fintech, healthcare, retail, and edtech. Covers the full cycle from UI/UX to QA. Well-suited for mid-size to enterprise teams...
Top Services:
- Software Development
- Staff Augmentation
- Mobile App Development
- Software Testing
- Web Development
- Show more
- Location
- San Francisco, California
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 15 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsVention Services
Data sourced from the agency's DesignRush profileIBM PayPal Cuvva Costa Coffee Memrise Urban Tailored Dog Food Delivery RealVNC Label on a Cable ClassPass
Vention Reviews & Testimonials

Mobile App Development Review from Lee Tupper
Vention has delivered excellent design prototypes and accurate time estimates. The app is still in beta mode, and the partnership with [...] Vention will [continue] until the release of the next version. Vention is a reliable team that offers quality service. (Verified via email)

Staff Augmentation Review from Jon Wade
Vention’s efforts allowed the successful development of the product, resulting in new customers. They provided backend developers, business analysts, UI designers, and QA testers to develop our solution. Vention cultivated a seamless partnership through constant updates and a collaborative approach. Overall, their team’s well-rounded expertise was impressive.

Web Development Review from AJ Canty
We’ve been working with Vention for quite some time and consider them an extension of our team, rather than an offshore vendor. We needed solid mobile developers to work with our in-house engineers to build our Primer SDKs on both mobile platforms. This was not a trivial thing as it required a lot of cross-functional communication, but the Vention team was up to the challenge. They quickly adopted the best practices we follow at Primer and proved to be effective and proactive.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTrusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific Solutions
Altoros is a 350+ person strong IT consulting and development group. For over 20 years, we've been assisting Global 2000 organizations in getting software products to market faster and reducing the cost of R&D experiments to enable stable business growth...
Top Services:
- Software Development
- Mobile App Development
- Web Design
- Web Development
- Staff Augmentation
- Show more
- Location
- Pleasanton, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAltoros Labs Services
Data sourced from the agency's DesignRush profileSiemens Toyota Hitachi Huawei Denso LikeFolio Dealflo iFit Walmart EQ Bank
Altoros Labs Reviews & Testimonials

Software Development Review from Daria Stolyar
We hired Altoros engineers as an essential extension of our client-facing internal teams. This was a tough decision because our reputation as a brand depends on the overall efficiency of our processes and we needed to make sure all risks are mitigated when it comes to delivery. Altoros has not let us down.Together with Altorosians we successfully deployed a number of tough and technologically complex projects on time. So our collaboration is certainly set to continue.

Software Development Review from Victoria Lewis
We enjoy working with our team, Roman Yurkin, Tatyana Kobzar, Svetlana Kalchanka and Tatiana Anop. They bring expertise and immense value to our business with each piece of work they complete. They are a major part of our business development and delivery.

Ruby on Rails Review from Greg Lipper
In my 30 years in the software business, I have never had as positive an experience with an outsourced development services provider as I have with Altoros. Each Altoros engineer we have worked with has been strong technically, estimated development times accurately, completed projects on time, and delivered code and projects with high quality. Beyond that, they have helped improve our thinking and approach with suggestions and ideas that were better than the spec of instructions we supplied.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsConsagous Technologies is a global IT solutions provider specializing in end-to-end web and mobile application development. Since 2008, the agency has delivered over 700 projects for more than 689 clients worldwide, offering services such as mobile app development, custom software, UI/UX design, web...
Top Services:
- Mobile App Development
- Web Development
- IT Services
- Software Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 17 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsConsagous Technologies Services
Data sourced from the agency's DesignRush profileGupa Otboo Purposs Hi Cabs Dr Citas Qliniqo Hitch Hiker ProDaddy CheapEatz POE
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...
Top Services:
- Mobile App Development
- Software Development
- IoT
- AI Development
- eCommerce Development
- Show more
- Location
- Fremont, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 5 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCognitiveClouds Services
Data sourced from the agency's DesignRush profileWalmart Sony Yahoo UBS Volkswagen Mahindra Electric Katerra
Get Things Done
Space-O Technologies is a software development company having 13+ years of experience in delivering custom software solutions for startups, enterprises, and Fortune 500 companies...
Top Services:
- Mobile App Development
- AI Development
- Software Development
- Web Development
- Web Design
- Show more
- Location
- Ontario, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSpace-O Technologies Services
Data sourced from the agency's DesignRush profileNike McAfee Saint-Gobain NAQEL Way MowSnowPros
Space-O Technologies Reviews & Testimonials

Web Design Review from Tom Sieron
We launched a new company, designed the branding and website, and needed a WordPress vendor to code it and support it in its growth. I have been running software development companies for the last 15 years, and can fully recommend Space-O Technologies team as a great PM, from a position of his client. They delivered well before time (and we were in a crunch already), and well in budget, while keeping top quality.
Megh Vadalia's Review Sourced from Google
This office is fantastic! The people here are friendly, and the work culture is something I truly value. Wishing them all the best, and I hope they continue to support their communities.
Rahul Gupta's Review Sourced from Google
I have read previous reviews about the company's interview process and feedback on Google, and they are accurate. A few months ago, I successfully completed all three rounds of interviews, but ultimately, I was not selected for the position. While I accept this outcome, I found the feedback provided to be unprofessional. This reflects poorly on the company's professionalism in selecting employees.Please don't say that I was never applied for the Job in your company.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAiming to enhance the lives of billions of users with innovative technology solutions.
BestPeers is a top software development company specializing in custom software, website development, UX/UI design, and full-stack solutions. With a focus on quality, innovation, and timely delivery, BestPeers creates consumer-centric tech solutions across diverse industries, ensuring client satisfaction and...
Top Services:
- Digital Strategy
- Web Design
- eCommerce Development
- Web Development
- UI/UX Design
- Show more
- Location
- California City, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsBest Peers Services
Data sourced from the agency's DesignRush profileS2Infinitum Softech Pvt Ltd Shethink pvt ltd AtmaGo
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