Hire Ruby on Rails developers in France

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.

Working as a fullstack Ruby On Rails and Flutter software engineer for many years. Experienced in a highload web apps, APIs and mobile apps development from scratch. Interested in Web 3 projects and everything new. Current projects: - https://copybet.com — React/Remix = React Native web and mobile apps - https://warp3.tech (RoR, sinatra, docker, mysql) — a server to scrap and prepare unique content summaries with translation automatically with 4 different neural networks (ONNX binary inference of NLP models). - https://brevy.app (flutter android, ios apps) — mobile client made with flutter to demonstrate warp3.tech abilities. - https://altyn.io (RoR, docker, postgres) — web3 blockchain based accounting web application with crypto support and professional double record Prefered: - mobile apps development with Flutter or React Native - web apps development with Ruby On Rails or React/Remix Payment in crypto is possible. Remote only.

I am a software engineer, programming mentor, and tech intrapreneur. I specialize in building elegant and functional web solutions, primarily using Ruby on Rails. With over ten years of experience, I've developed a diverse portfolio of web applications and services using Ruby, JavaScript, Node.js, and more. My expertise extends to integrating web services, scaling applications, and managing infrastructure and security across numerous projects. Beyond my professional work, I mentor students and professionals looking to develop their Ruby and JavaScript skills. Sharing knowledge and helping others achieve their goals has become a rewarding extension of my career. I approach technology not as an end goal but as a means to solve meaningful problems. This perspective is reinforced by my practice of Parkour, whose philosophy of overcoming obstacles and adapting to challenges influences how I approach both programming and life.

I am a skilled Senior Software Engineer with a passion for software development and a strong track record in designing and developing web and mobile applications with an entrepreneurial mindset. With expertise in multiple languages and technologies, including Rails, Swift, React Native, Go, and Java, I have successfully delivered complex projects for renowned companies and have a proven ability to optimize performance and enhance user experiences. Je parle français couramment.

Over the past six years, I have honed my skills in Ruby on Rails, utilizing technologies like Hotwire or React for the frontend. The versatility and elegance of this framework have captivated me, making it my go-to choice for building robust web applications. In addition to my expertise in Ruby on Rails, I have also immersed myself in the world of Python Data Science libraries, including Pandas, Scikit-learn, and Tensorflow. This journey has sparked a deep interest in Natural Language Processing (NLP), and I am eager to explore innovative applications in this field. Beyond my development work, I am a teacher at Ada Tech School, an inclusive institution dedicated to fostering diversity within the tech industry, and Nao School, a bootcamp in Data Science. I am excited to learn more about your projects and how I can contribute my skills and enthusiasm to their success.

Software engineer & DevOps with 15+ years of experience in applications development and infrastructures management. I offer a wide range of services from Ruby on Rails projects consulting and development to the deployment of cloud infrastructure on Amazon Web Services.

Software engineer with over 3 years of professional experience. My educational background includes an MSc 2:1 in computer science and engineering from "École Centrale de Lyon" (Lyon, France) in 2021. I then worked for 3 years as a backend developer at a startup in Paris. My work has encompassed backend development, data engineering, code and database performance improvement, e-commerce platform customization and logistics, price modelling, API creation, batch processing, technical documentation, and testing. Some examples of previous projects : Design of the data model of purchase and sale prices at Omie. Developing and adapting the interface of the e-commerce platform Spree/Solidus. Automating the data collection flow for the development of new epicery products. Development of an interface for planning work slots for clinic employees. Development of a ticket management interface for customer service at MailPlus. Experience with the following tools: Languages: Ruby, JavaScript, Python, Ruby on Rails Platforms: Heroku Frontend: React, Vue.js, Angular, HTML/CSS Payment providers: Stripe Data viz: D3.js Backend tools: Solidus open-source e-commerce solutions, PostgreSQL, Amazon S3, etc. CI/CD Tools: GitHub CI, CircleCI Fluent in French, English. Notions of German, Spanish and Portuguese.

With a creative background, I dove into Ruby six years ago for a project related to my original profession. I got hooked and have been coding daily ever since, working on various personal projects published on the web. These projects have had varying levels of success, but they inspired me to transition into a professional career in development. In 2024, I earned both the Silver and Gold Ruby Association Certifications (June and October, respectively), which solidified my passion for venturing into the Ruby world professionally. I work with the classic stack, including Stimulus/Hotwire on the front end, but I’m more than happy to jump on the React or Vue train when needed. When it comes to deployment, I’ve used PAAS platforms and direct setups with SystemD services running Foreman processes behind Nginx. Testing? RSpec is my go-to. Along the way, I’ve harnessed classic utilities like Redis for key-value storage, Vips for faster image processing, and, of course, relational databases.

Hi there 👋 I'm Oussama, a passionate Ruby on Rails developer with over 13 years of hands-on experience in crafting robust web applications. My journey began with a fascination for elegant code and scalable architectures, and it has since evolved into a relentless pursuit of excellence in software engineering. 💼 Professional Background I have been deeply immersed in the Rails ecosystem since its earlier iterations, witnessing its growth and evolution firsthand. Throughout my career, I've contributed to various projects, ranging from startups to enterprise-level applications, consistently striving to leverage the best practices and emerging technologies to deliver high-quality, efficient solutions. 🚀 Expertise My expertise spans across: Ruby on Rails Development: Proficient in building full-stack applications, RESTful APIs, and microservices using Rails, ensuring scalability and maintainability. Database Design and Optimization: Experienced in designing database schemas and optimizing queries to enhance performance. Test-Driven Development (TDD): Strong advocate of TDD principles to ensure code reliability and maintainability, utilizing RSpec and other testing frameworks extensively. Frontend Technologies: Skilled in frontend development with JavaScript, React, or Ember.js, ensuring seamless integration with Rails backend. 🌟 What Drives Me I'm passionate about leveraging technology to solve complex problems and create impactful solutions. I thrive in collaborative environments, where my experience and expertise can contribute to innovative projects and foster a culture of continuous improvement.

I started learning Ruby 10 years ago when a specific problem needed to be solved at a retail company. Since then, I have continuously leveraged the potential of this exceptional programming language. Currently, I am training in AI-assisted automation to optimize the resolution of time-consuming problems. I am passionate about learning new skills. I have always had a keen interest in acquiring new knowledge and consistently find ways to apply what I learn to solve problems or improve processes. I take a great interest in deeply understanding the products I work with, which allows me to find the best solutions to satisfy customer needs. Over the past few years, I have used various technologies such as Ruby, Hotwire, Vue.js, Flutter, as well as tools in artificial intelligence, No-Code, and automation.