Hire principal / staff freelance Ruby on Rails developers

1200+ Ruby on Rails developers looking for their next gig. Juniors to seniors and everyone in between, you'll find them all here.

Showing 389 of 1200+ developers. Reset filters

Developer's avatar

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

High response rate

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: 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, and Spanish.

Developer's avatar

Extensive experience in Ruby on Rails, Heroku, Docker. Expertise in Engineering Management.

High response rate
Recently updated

My journey in the world of software development has been marked by continuous growth and a passion for solving complex challenges. I've evolved from a Lecturer in web development to a Tech Lead Software Engineer, gaining expertise in various areas along the way. A significant milestone in my career was my role as a Senior Backend Developer / DevOps at Webedia GmbH. There, I not only mastered Ruby on Rails but also improved and configured recommendation systems, elevating user experiences to new heights. In another role as a DevOps / Platform Engineer at anynines, I excelled in automated PaaS management and introduced microservices architecture using Ruby and Golang. My knack for system automation and PaaS application support contributed significantly to the organization's efficiency. Throughout my journey, I've embraced cloud infrastructure, DevOps practices, and leadership roles. My unique skills lie in bridging the gap between development, infrastructure, and system automation, enabling me to tackle challenges that others may find daunting. I'm not just a developer; I'm an innovator who thrives on continuous learning and finding creative solutions in the ever-evolving landscape of technology. With 15+ years of industry experience, I have a proven track record in leading large teams, designing innovative systems, and making significant contributions to the industry. I am well-equipped to set and direct departments and contribute substantially to any challenging projects.

Sign up now to see more profiles.

Gain access to 1300+ Ruby on Rails developers.