Frontend-focused full-stack developer in Nice. Four years on a white-label car-sharing SaaS used by operators worldwide: payments, subscriptions, release tooling. Built getfolio.dev solo.
TypeScript
Developer portfolio platform that syncs with GitHub. I built and run it solo: Next.js 16 and Firebase in an Nx monorepo, Stripe subscriptions, custom domains, eight themes, and an LLM reviewer that scores portfolios with a deterministic rubric instead of trusting the model's number.
Android app that tracks a streak of days you don't open an app you're trying to quit. Flutter UI with native Kotlin for usage detection. Runs fully on-device: no backend, no account, no analytics. [in development]
React and TypeScript component library built from scratch to go deep on headless and compound component patterns. Published on npm as @doom-ui/components. Includes an accessible DatePicker with range selection, a virtualized Table with sorting and filtering, and a polymorphic Button, all fully typed with generic props.
Built to learn NestJS. Agile project manager with a Kanban board that updates live across clients through Firestore listeners. The NestJS API handles Firebase auth verification and the projects, sprints and tasks endpoints, validated with class-validator and documented in Swagger.
PDF, updated Sep 2026
Hey, I'm Sébastien.
I built getfolio.dev on my own, end to end. It generates a developer portfolio from your GitHub activity and keeps it in sync. Auth, Stripe billing, scheduled GitHub sync, eight themes, custom domains, and an LLM review that scores a portfolio and rewrites the lines that weaken it. It's live, you're on it right now.
Before that and alongside it, four years at Vulog on a white-label car-sharing platform used by operators in Europe, Canada, Australia and Japan, with clients including Toyota, Hyundai-Kia and VW Group:
What I work with:
Sebastien brought a positive and collaborative energy to our team from day one. He quickly became someone the team could rely on, especially during tight deadlines and fast-paced changes. His enthusiasm for learning and experimenting with modern front-end technologies was always evident. What stood out most was his adaptability—he welcomed new environments and changes with ease, and always contributed with a great attitude. Working with Sebastien was both enjoyable and rewarding.
I had the pleasure of working with Sébastien at Vulog and saw his impressive growth after he joined the team. From the start, he showed a great attitude toward collaboration, especially during code reviews, and working together was both productive and enjoyable.
I had the chance to work with Sébastien, and he's the kind of colleague you'd want on every team. [...] He doesn't wait to be asked, he shows up with ideas, directions and solutions. [...] What also sets him apart is the way he has woven AI into his day-to-day work. He uses it thoughtfully, he experiments, and above all he shares his best practices with the team: his input has moved everyone around him forward.