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Top freelance Ruby developers available to hire

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Freelance Ruby Developer - Abdurrachman M
Freelance Ruby Developer5.0 (103 reviews)

Website: https://linktr.ee/YoKulGuy --- I'm a realist, aspiring general system thinker, and software craftsman. Despite specialists giving much contribution and productivity to society, general system thinkers and their general system thinking can help us solve the second-order effect of human creation. As a society, we build civilization; we build skyscrapers, aeroplanes, gadgets, and all the advancements in technology, but we overlooked the second-order effect of our creation. Global warming and gadget addictions are an example to name a few. The more people adopt general system thinking, the more we can achieve a better society and brings our world to the next thousand years. I do research and craft code as my way of expressing my idea and belief. I crafted a scientific computation tool and instrument to help researchers do better research when I was in college. I led a team in a startup called Mekari to empower businesses in Indonesia. I previously worked at Midtrans, enabling software developers to be more productive and better empower commerce through technology. I write production code in Elm, JavaScript, Bash, Ruby, and Java. In 2020 I did functional programming on Elm and built a community around it. Feel free to reach out to me if you are an Elm user!

Freelance Ruby Developer - Heather Soron Kaminski
Freelance Ruby Developer5.0 (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 Developer - Carlos Aguilar
Freelance Ruby Developer4.9 (67 reviews)

I’m a senior mobile + backend engineer with 20+ years in software (PHP since 2002; professional since 2005) and 10+ years building mobile apps. I help teams ship and stabilize real products—especially apps that are “almost done” but stuck on crashes, performance, flaky networking, or release blockers. What I can help you with (fast, practical): • iOS (Swift, SwiftUI, UIKit): crash fixes, performance/memory, concurrency issues, architecture cleanup • Flutter (iOS/Android/macOS): reliability, state consistency, networking/retry behavior, release readiness • Backend stability (PHP/Laravel or custom, Python/Django, Rails): idempotency, queues, DB performance, webhook safety • Firebase + mobile reliability: Auth/Firestore rules, Cloud Functions patterns, analytics/instrumentation • Monetization + shipping: RevenueCat/IAP reliability, App Store Connect/Play Console, CI/CD, rejection handling Recent work includes taking a messy iOS codebase (CakeClub) to production-ready with a Firebase Cloud Functions v2 backend, stronger security patterns, CI/release automation, and RevenueCat integration; and delivering major cross-platform Flutter work (BillBlaster) including design refinements, admin tooling, and push notification features. If you come with logs/screenshots (Crashlytics traces, network errors, repro steps), I’ll give you a clear diagnosis and a prioritized fix plan—and if it makes sense, I can execute the fixes as a focused sprint.

Freelance Ruby Developer - Rodrigo Droguett
Freelance Ruby Developer

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

Freelance Ruby Developer - Mikhail Pospelov
Freelance Ruby Developer5.0 (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:** ✅ Specialities: Computer Engineering, Software Engineer, Web Development, Mobile development, Open Source ✅ Languages:Ruby(6 years), Javascript(4 years), Nodejs(1 year), Elixir(1 year) ✅ Backend Frameworks: Ruby On Rails(6 years), Phoenix(1 year) ✅ Frontend Frameworks: AngularJS(4 years), ReactJS(2 years) ✅ Relational database:Postgresql(6 years), MySQL(6 years) ✅ NoSql databases:Elasticsearch(4 years), Redis(3 years), MongoDB(3 years) ✅ 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 Developer - Nick ottrt
Freelance Ruby Developer5.0 (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.

Freelance Ruby Developer - Joshua Nussbaum
Freelance Ruby Developer5.0 (3 reviews)

If you need any assistance with a project or for mentoring, feel free to reach out. I'll do everything I can to make your project a success. Over the years many developers have helped me learn and improve. So, I'd like to do the same for others. I've done work for Shopify, Samsung, BP, Aldo, and many others. I've got a lot of real world experience developing useful software. My focus has always been writing simple code that easy to understand and maintain.

Freelance Ruby Developer - Tyler Green
Freelance Ruby Developer5.0 (4 reviews)

Hello, I'm Tyler! With a Bachelor's and Master's degree in Computer Engineering and over nine years of experience in the tech industry, I bring a wealth of knowledge and expertise to the table. I have worked on professional projects such as using Ruby to process x86 assembly instructions and using Python and React to show public transit arrival times. My experience across stacks and domains has led my passion to grow beyond just "getting code to work"; it's about unraveling the nuances of how software functions and exploring each layer of its construction. Throughout my professional career, I've taken immense joy in mentoring fellow engineers. Not long ago, I helped a junior engineer migrate some data processing code from a React Native application to a Kotlin application. This not only solidified their understanding of frontend versus backend development, but also enhanced my skills in explaining technical concepts in an accessible way. I approach teaching from a "First Principles" approach: if we can step back and understand the foundations underpinning each subject, we can dive into the details of a task or project with more confidence and resilience. I'm also excited to introduce a new guided Rust HTTP server project, which provides a deep dive into how an advanced library, similar to Axum, works under the hood. Over the course of five sessions, you'll gain hands-on experience in building a performant HTTP server from scratch, learning key concepts in Rust and network programming along the way. Lastly, I view code as a creative pursuit. Is it art? That's in the eye of the beholder. Having something functional is an critical step, but producing something clean and that you are proud of is my north star. I invite you to contact me with any questions or to discuss your specific learning goals. Let's work together to build your understanding and confidence in software and computer engineering!

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Frequently asked questions

How long do Ruby 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 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 request on Codementor, check out our article.

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We don’t charge anything when you post a freelance hiring request for Ruby 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 developers different?

We do a comprehensive technical and communications screen of all Ruby 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 developers’ user satisfaction rates.

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