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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 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.

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Senior engineer with 10+ years in Rails

High response rate

⚒️ Experienced Ruby / Rails Engineer — 🇬🇧 English Native — 🙋‍♂️ Available March 2025 — 👇 Pitch Approaching 15 years as a professional software engineer and plenty more as a hobbyist, my purpose is to ship useful and worthwhile software. I can lead your team to launch your new MVP or bring your suffering app back to life, with a razor-sharp focus on generating value. I’ll ask the stupid questions that need to be asked and work closely with you to ensure time is spent delivering what your customers need, without the fluff they don’t. I've enjoyed working with all sorts of people in all sorts of companies, building all sorts of things. That means I'm capable of working on a broad variety of problems — from rapidly building MVPs in a tiny team to iterating on planet-scale microservices within a large organisation. I probably won't be able to patent a new algorithm to reduce load times by 0.05% across the board. But I will be able to help you find and remediate bottlenecks that are demonstrably causing your customers to bounce. I won't disappear into a cave for two weeks with a feature specification and come back with a perfect implementation. I'd rather iterate and communicate; in two weeks the entire feature may have been scrapped in favour of a different value-add. Let's build the right things well, rather than the wrong things perfectly. And I won't sit idly by if the team is clearly unhappy and underperforming. Whether I need to take the reins myself or inform others, everyone deserves to work in a positive environment, conducive to their happiness. Anything less produces bad software. So that's roughly what I do. Have a nice day!

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