Hire mid-level 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.

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 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.

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.

👉 I'm a Rails full stack developer with more than 4 years of experience. I have already worked on an REST API, ERP and SaaS. The most complex project I worked on had 124 Ruby models. I have worked as freelancer or full-time employee with startups and bigger companies. ✔️ Communication is the basis of a healthy collaboration ✔️ I started to write technical articles on Medium ✔️ I followed the training of Le Wagon Bootcamp in Marseille (France) My skills: ✅ Ruby / Ruby on Rails / Rspec / Minitest 💎 ✅ Javascript / Hotwire (Turbo & Stimulus) / Jquery ✅ PostgreSQL / Redis / Sidekiq / Scheduler / ActionCable / Omniauth ✅ Heroku / Github / Namecheap / CleverCloud ✅ Responsive Design / PWA / API / CI-CD / WCAG / Webhook ✅ Slim / HAML/ View components / Actors / Presenters / Decorators ✅ SEO / RGPD / SSO / OpenAI / Prompt Engineering / JWT ✅ Postmark / Stripe / Swagger / Carbon.io / Rubocop ✅ Devise / Pundit / Cloudinary / Mapbox / Geocoder / Sentry / Cryptr

Hello world, I’m a Ruby-on-Rails developer based in France, with 15 years of experience. Back-end developer I graduated with a master in computer sciences, and held various positions as developer, tester, quality leader, project leader, mentor, always keeping hands on code. Front-end developer Then I spent some years in the Front-end space, when things started to be well-structured thanks to Angular, then Ember and React. Now Full-stack developer For more than 5 years now, I've been coding all layers, preferably with Rails, but I'm open to other stacks. Some things I look for in the things I work on are: • Bring maximum value to the end user • Maximise empathy and mutual understanding • Robustness and stability • Have great design and user experience • Minimize efforts by automating everything I can I’m passionate about quality. It includes the quality of the relationships between team members. To increase my knowledge, I used to go to conferences, I now follow them on YouTube. I like to open and read code from others, picking clever tricks wherever possible. I'm writing 2 tech blogs : one about me, another to help junior Ruby-on-Rails developers to increase their skills. Apart from work, I like to be outside, no matter if it's gardening or running. Write me at bdavidxyz at gmail dot com Warm regards! D

Hi, I'm a french programmer in the process of relocating to the US (San Francisco) through an E2 visa (Investor visa). I will open my own agency and would love to have you as my client. I can work from France to start and from the US in winter 2023. I have deep expertise in Ruby on Rails and Ruby and know my way around React and Stimulus (and JavaScript in general). I worked in the US and in France for Bespoke Post, Trusted, Doctolib and thoughtbot. My daily rate is $1000/day. Thanks, Dorian

Hey! I'm a product and software engineer with over 10 years of professional experience and a degree in Computer Science from Epitech. I have extensive experience in full stack engineering, from infrastructure (e.g. Terraform and Docker) to the backend (e.g. Ruby on Rails and Node with Express) and the frontend (e.g. React/Redux). I’ve had the chance of building products in a wide variety of industries, including: marketing automation for enterprise companies, human ressources for SMBs, and logistics for E-commerce DTC brands.

Hi, I'd be delighted to build your MVP or add new features to your existing Ruby app. From brainstorming to design to implementation, I can jump in at any point and provide constructive feedback or working code, whatever you need. Having worked in the frontend before going fullstack, I'm particularly at ease with HTML and CSS, and I take great care to build responsive and accessible UIs. Backend-wise, I've worked on several document generators, online shops, built blogs, implemented full-text search, and worked with APIs and webhooks, both inbound and outbound. Let's talk!