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Top freelance Ruby on Rails developers available to hire

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Freelance Ruby on Rails Developer - Heather Soron Kaminski
Freelance Ruby on Rails Developer5.0Ā (43 reviews)

I'm a multi-talented senior-level developer with a focus in webdev and Linux servers, and have experience working with various sorts of code on various projects. I have very strong troubleshooting skills, am adept at learning new tech, and have some secondary cybersecurity experience (such as conducting informal security audits). I'm enthusiastic about sharing knowledge, am practiced at explaining how code works, and am eager to help people learn about programming! Availability is typically 11am - 11pm local time (UTC+7), although I have an hour or two of flexibility on that.

Freelance Ruby on Rails Developer - Mark Nyon
Freelance Ruby on Rails Developer5.0Ā (10 reviews)

I’m a Technical Lead and Full-Stack Developer with 17+ years of experience delivering robust web applications and SaaS platforms. I have led engineering teams through complex projects, balancing hands-on development with mentoring and process improvements to consistently meet aggressive deadlines. Notably, I helped scale infrastructure and improve performance for SaaS products used by tens of thousands of users. I excel at driving feature delivery end-to-end—whether implementing APIs, optimizing workflows, or guiding teams—as a dependable executor and problem solver.

Freelance Ruby on Rails Developer - Rodrigo Droguett
Freelance Ruby on Rails Developer

I'm a chilean developer with years of experience in web technologies.

Freelance Ruby on Rails Developer - Jon Chui
Freelance Ruby on Rails Developer

I'm Jon and I love mentoring junior engineers! For 10+ years I lived & breathed šŸ“±mobile.. worked on top 10 App Store apps (Google Maps, Gmail, Google search) as well as a bunch that didn't see the light of day. The pressure took it's toll finally & I followed the "burnout track" and took 6 month sabbatical (that would later turn into almost 3 years). My family & I left the bay with 8 suitcases of all our belongings, and i thought tech would only be in my rear view mirror... I exchanged the standup desks & nap pods of silicon valley to serve families in the slums of Philippines & Cambodia. To my utter surprise and delight though, these families were happier than I was. Something was missing? We came back to the mainland & I tried my hand at using tech for good, by working on the "strava for sobriety" app and it was amazing. I was finally helping ppl again! But as w/ many startups, funding fell through... I then went to help a big, well-funded startup who's goal was "tech for good", specifically in non-profit church space. I was so excited! And somehow, in the midst of "strat sums" and super fun budgets I lost my way... I actually kind of lost heart.

Freelance Ruby on Rails Developer - Owais Jamil
Freelance Ruby on Rails Developer

Hey there! I'm Owais Jamil and I’m a software engineer with roots in New England and Austin, TX. Right now I’m enrolled as a master’s candidate at the University of Texas, most recently worked as a senior backend engineer at Edlink. I have experience working on mobile and web apps, and have tutored and taught others in the past.

Freelance Ruby on Rails Developer - easwarendra koka
Freelance Ruby on Rails Developer

Are you looking for a hands-on Full-Stack Architect who can build, scale, and support high-performance AI and SaaS platforms from the ground up? With over 10 years of professional experience—I specialize in architecting fast, secure, and resilient applications with real-time, AI-integrated capabilities. **What I Bring to the Table** šŸš€ **AI-SaaS Execution:** At MSBAI, I built the admin platform for the GURU Assistant, an LLM agent that diagnoses and fixes technical issues in scientific workflows. I’ve debugged AI-generated code, optimized ML pipelines in real-time, and translated LLM outputs into production-ready tooling. āš™ļø **Scalable Architectures:** From building live simulation UIs to secure multi-tenant marketplaces and 3D modeling SaaS apps, I’ve delivered systems that serve thousands of concurrent users with high availability. 🧠 **Full-Stack Mastery:** Expertise in TypeScript, React, Next.js, Node.js, Go, PostgreSQL, GraphQL, and low-latency backends using Rust and serverless functions on AWS and Supabase. šŸ›  **Cross-Domain Versatility:** I’ve worked on platforms ranging from MLOps and scientific computing (MSBAI) to edtech mentorship networks (Scholarly) and cybersecurity labs (Xintra). šŸ’¬ **Developer Empathy + AI Support:** I’ve supported developers using AI agents by debugging generated code, writing CLI tooling, and guiding teams through adopting LLMs effectively in their workflows. **Why Work With Me** šŸ”§ **End-to-End Ownership:** I thrive in fast-paced teams—leading system design, writing clean production code, and mentoring devs while delivering measurable impact. 🧰 **Startup-Ready Mindset:** I’m equally comfortable building MVPs from scratch or modernizing legacy systems to support scale and maintainability. šŸ“ˆ **Proven Outcomes:** I've shipped everything from Slack-integrated dashboards and Gmail margin calculators to low-code builders and cross-platform mobile apps. **Tech Proficiency** * **Frontend:** React.js, Next.js, Tailwind CSS, React Native * **Backend:** Node.js, Express, GraphQL, Rust (Axum), Python (FastAPI) * **Data & AI:** PostgreSQL, Supabase, MongoDB, Redis, LLM workflows * **Cloud & Infra:** AWS, Supabase, Docker, GitHub Actions, Vercel * **DevOps & Testing:** Cypress, GitLab CI/CD, Terraform, observability stacks **Industries Served** * 🧪 ML/AI Ops (MSBAI) * 🌐 SaaS & Developer Tools (Xintra, Scholarly) * šŸ„ Healthtech (Loop Health) * šŸŽ® Gaming Platforms (Joyride, Kiwi) * šŸ›ļø E-Commerce (GlowRoad) Let’s collaborate—whether you’re scaling an AI-native SaaS platform, building a developer-first observability tool, or launching a privacy-first user experience, I bring speed, technical depth, and real-world execution.

Freelance Ruby on Rails Developer - Greg Gorlen
Freelance Ruby on Rails Developer5.0Ā (458 reviews)

I'm a full stack software engineer, technical writer and computer science educator. I enjoy testing, debugging, refactoring, application design, maintaining projects and teaching. My primary technologies are JavaScript, TypeScript, React, Express (PERN stack), Playwright, Puppeteer, Python, Flask and C. See my [Stack Overflow tags](https://stackoverflow.com/users/6243352/ggorlen?tab=tags) for more technologies ordered roughly by my interest and experience. In addition to Stack Overflow, I'm active on [Code Review Stack Exchange](https://codereview.stackexchange.com/users/171065/ggorlen). Feel free to peek at a few of these reviews to get a sense of the insights I can offer your code. I'm looking forward to hearing about your project! _<sub>Profile picture by the wonderful [Emily Huston](https://emilyhuston.github.io) ā¤ļø</sub>_

Freelance Ruby on Rails Developer - Samir Habib Zahmani
Freelance Ruby on Rails Developer5.0Ā (445 reviews)
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So, you want to create a fancy website or web application. You *"embellished"* your resumĆ© by saying you are a competent web developer, and now you've landed the job and don't know where to start. You keep hearing about cross-platform mobile apps, where writing a single piece of code gives you an Android AND an IOS app, but don't know much beyond that. You know the basics of HTML/CSS/JS but everyone keeps bugging you about React this, Fullstack that, and you have no idea what that is, and would like to change that. Or... you’re starting from zero and you simply wish to learn. If you fit in any of those categories (and others), I'm your man. If you’re feeling overwhelmed by the overabundance of tools, frameworks and fancy terms, don’t fret, **we’ve all been there**. And I’m here to make the process painless. We can take things one step at a time, no matter your level. Or maybe you just want help looking over your code, smoothing out bugs, or someone to accompany you while you bring your next idea to life. Not to worry; I can help. I have over **8 years** of experience as a Fullstack NodeJS developer, with a special focus on React and React-native, which is basically just fancy lingo for saying I make websites, apps and mobile apps very fast. I can accompany you on your journey from absolute beginner to expert level, if you'll give me a chance.

Freelance Ruby on Rails Developer - Mikhail Pospelov
Freelance Ruby on Rails Developer5.0Ā (26 reviews)

An accomplished and high-motivated IT professional with 6+ years experience of IT leadership involved in web development, application development and System & Solution Architecture. My main competency is in building rich client-side applications, on both sides back-end and front-end. I strongly believe in TDD as the only way to build a bullet-proof code that makes everyone happy and it allows me to rest at night. Reaching 100% test coverage is my passion. **SKILLS:** āœ… Specialities: Computer Engineering, Software Engineer, Web Development, Mobile development, Open Source āœ… Languages:Ruby(6 years), Javascript(4 years), Nodejs(1 year), Elixir(1 year) āœ… Backend Frameworks: Ruby On Rails(6 years), Phoenix(1 year) āœ… Frontend Frameworks: AngularJS(4 years), ReactJS(2 years) āœ… Relational database:Postgresql(6 years), MySQL(6 years) āœ… NoSql databases:Elasticsearch(4 years), Redis(3 years), MongoDB(3 years) āœ… Other technologies:​Rabbitmq, Redux, Universal rendering, HTML, CSS, SCSS, BEM, Docker, AWS, Google Cloud Platform, Webpack, Git, Progressive web apps **LINKS:** https://github.com/mpospelov https://stackoverflow.com/users/2460416/mpospelov https://codementor.io/mpospelov https://www.upwork.com/o/profiles/users/_~0182077648cc549f21/ https://www.toptal.com/resume/mikhail-pospelov

Freelance Ruby on Rails Developer - Nick ottrt
Freelance Ruby on Rails Developer5.0Ā (20 reviews)

Senior software engineer with 5+ years of experience in backend web technologies including Ruby on Rails, Python, Go, and MySQL. Currently at Tesla, previously EasyPost. Bachelor's in Computer Science. Main strengths include architecting applications and backend API development, have also worked in fullstack roles. The best part of software engineering is that you never stop learning new things.

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Frequently asked questions

How long do Ruby on Rails projects normally take?

The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Ruby on Rails project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Ruby on Rails request on Codementor, check out our article.

How much does it cost to hire a freelance Ruby on Rails developer?

We don’t charge anything when you post a freelance hiring request for Ruby on Rails developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.

What makes Codementor Ruby on Rails developers different?

We do a comprehensive technical and communications screen of all Ruby on Rails developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Ruby on Rails developers’ user satisfaction rates.

What happens if I’m not happy with the freelancer’s work?

As a platform, we strive to ensure you’re always happy with your Ruby on Rails project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.

For more answers to frequently asked questions, see here.

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