Hire c-level Ruby on Rails developers

1400+ Ruby on Rails developers looking for their next gig. Juniors to seniors and everyone in between, you'll find them all here.


Showing 244 of 1400+ developers. Reset filters

Developer's avatar

CTO, Senior Full Stack Dev | RoR and Js/Typescript Expert | Remote

High response rate
Recently updated

Senior software engineer with over 10 years of experience as a remote freelancer. My educational background includes an MSc 2:1 in computer science and applied mathematics engineering from ENSEEIHT (Toulouse, France) in 2009. I then worked for 2 years as a frontend developer at a startup in London and transitioned to backend work in 2013. Specializing in web application development, I have undertaken projects for companies such as Carrefour, L'Oréal, Cocolis, Epicery, and Alerti. My work has encompassed backend development, data engineering, code and database performance improvement, e-commerce platform customization and logistics, payment system integration, API creation, crawlers, technical documentation, and testing. Passionate about data manipulation and rendering them to users and stakeholders in a more meaningful way, I am currently expanding my skills in AI/ML and neural networks through CNRS fidle formation to explore how I could apply and offer these services to my clients. Recent milestones and accomplishments include: Migrating the payment system from Adyen to Stripe for Epicery Migrating the frontend from Vue to Hotwire for Epicery Developing a geolocalized matching algorithm between carriers and packages for Cocolis Fields of expertise: E-commerce solutions with Solidus/Spree open-source framework Data processing and visualization with Business Intelligence tools for reporting Integration of payment system providers Integration of third-party APIs Database design and performance optimization Frontend performance optimization Crawling and scraping Technical audits Testing, documentation, CI/CD tools Experience with the following tools: Languages: Ruby, Typescript, JavaScript, Node.js, Ruby on Rails Platforms: AWS, Google Cloud Platform, Render, Heroku Frontend: React, Vue.js, Hotwire, Angular, HTML/CSS, Alpine.js, HTMX, Astro Payment providers: Stripe, Mangopay, Adyen, PayPal Data viz: Amazon QuickSight, Superset, Tableau Backend tools: Solidus open-source e-commerce solution, New Relic, Elasticsearch, PostgreSQL, Amazon S3, etc. CI/CD Tools: GitHub CI, CircleCI Fluent in French, English, Spanish.

Developer's avatar

10 years plus experience with strong mathematical and engineering background

New profile

Highlights: 10+ years of experience as freelancer in FinTech,Healtcare and HR applications Proficient in Ruby on Rails on the backend, and lots of other tech on the frontend. Specialized in optimizing, legacy code, database performance. Experience as DevOps well. Full background: As a nineties kid, I was already tinkering/dabbling around making games and invoicing software on our first pc at home. In university, while doing my engineering and mathematics degrees, I was scripting and using a lot of different technologies on complex physics problems. In 2012, I discovered Ruby/Ruby on Rails and a lot of things just clicked/felt right. I've specifically looked for RoR startups, joined an early stage FinTech startup that exploded and has had a successful exit. From then on, I turned it into my career and never looked back. I worked in FinTech, Healthcare, HR applications, picking up different domains and iterating upon complex calculations on the way. I've architected several green field/new applications from the ground up, all of them are still in use today. Amongst them are some high traffic enrollment systems in sports and leisure. I've worked with all Rails versions, even facilitating a migration from a huge (400 models plus) legacy rails 2 application to modern standards. Along the way, I've seen some very interesting PostgresQL optimization problems. You can't go so long and not pick up some DevOps as a side quest, so worked with terraform, chef, Ansible, Kubernetes and all kinds of provisioning/hosting/deployment tools and pipelines. I've used most modern frontend frameworks (React/Redux, Vue, Angular, Ember) on different projects but for smaller applications I tend to prefer to keep it simple using Hotwire. Always open for a chat to see what I can do for you!

Developer's avatar

Looking only for contract work | 0-to-1 Development | Rails developer (12+ years) | Sidekiq | RabbitMQ | Hotwire, Stimulus and Turbo | CTO | 0-to-1 Apps

I’m a Rails developer with over 12 years of experience in software development, including 10+ years working hands-on with Ruby on Rails. Along the way, I’ve built all kinds of applications—automation tools, ERPs, inventory management systems, insurtech platforms, social media apps, and even AI-integrated solutions. I’ve always focused on creating large-scale, high-performance apps that can handle thousands of concurrent records without breaking a sweat. I’ve worked with both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) databases, making sure they’re set up for speed and scalability. On the backend, I’m well-versed in Sidekiq and RabbitMQ for background processing, and on the frontend, I use tools like Hotwire, Turbo, and Stimulus to make apps fast and interactive. When it comes to deployment, I’ve got plenty of experience with Google Cloud, AWS, and Fly.io, which lets me build infrastructure that’s as reliable as it is scalable. The recent apps I've developed have included AI integration with OpenAI and Anthropic APIs. At present, I'm also setting up an internal LLM for speeding up software development. What makes me stand out? I code fast. Really fast. I’m great at taking an idea from zero to a fully functioning app in just days, without cutting corners on quality. Having worked in Asia and Europe, I’ve learned how to adapt to different clients and challenges, which helps me deliver exactly what’s needed, every time. Recently, I co-founded my own software consulting firm, where I get to use my skills and experience to help businesses grow and succeed. Outside of coding, I’m passionate about dogs, I love solving crosswords, and I’m a bit of a political nerd. These hobbies keep my mind sharp and my creativity flowing, which is probably why I enjoy tackling complex coding challenges. I know Ruby and Rails inside out, and I thrive on turning big ideas into reality—quickly and efficiently. If you need someone who can hit the ground running and deliver results, I’m your developer.

Developer's avatar

Pragmatic software engineer with Ruby on Rails experience over 15 years

My journey with Ruby on Rails began over 17 years ago, and it's become the backbone of my engineering approach. As a contributor to the Rails framework with multiple patches merged into the core codebase, I've developed a deep understanding of its internals that few developers possess. This knowledge allows me to build solutions that leverage Rails' full potential while avoiding common pitfalls. Throughout my career, I've architected and scaled Rails applications to handle impressive throughput—like the vacation rental platform processing 300 requests per second with sub-second response times. My expertise extends beyond just writing code; I've mastered the art of integrating Rails with modern JavaScript frameworks like Vue.js and React, creating cohesive full-stack experiences that delight users. What sets me apart is my focus on sustainable architecture. While many developers optimize for immediate delivery, I build systems designed to remain maintainable for years. At OpusHero, I led a small team that achieved 98% test coverage and near-zero technical debt while continuously shipping features. This engineering discipline doesn't slow development—it accelerates it by preventing the accumulation of problems that typically plague long-running projects. I bring a holistic approach to development that includes performance optimization, security best practices, and developer experience. When I join a team, I don't just contribute code—I establish robust engineering practices, mentor junior developers, and create an environment where everyone can do their best work. My greatest satisfaction comes from building systems that stand the test of time and teams that continuously improve. Tech Stack Highlights 🛠️ 🔹 Ruby on Rails 💎 - Core framework with deep expertise in API design 🔹 PostgreSQL/MySQL 🐘 - Database optimization and complex queries 🔹 Vue.js/React ⚛️ - Modern frontend development 🔹 GraphQL/Apollo 🚀 - Efficient API architecture 🔹 Docker/Kamal 🐳 - Containerization and deployment 🔹 Elasticsearch 🔍 - Search implementation and optimization 🔹 Redis/Sidekiq ⚡ - Background processing and caching 🔹 RSpec/Cypress 🧪 - Comprehensive testing strategies 🔹 Avo/ActiveAdmin 📊 - Admin panel solutions 🔹 CI/CD 🔄 - Automated testing and zero-downtime deployments 🔹 hCloud/Hetzner ☁️ - Cloud infrastructure management This is just a snapshot of my technical toolkit. I continuously expand my skills to stay current with emerging technologies and best practices.

Sign up now to see more profiles.

Gain access to 1500+ Ruby on Rails developers.