Freelancer profile translated to English.

Description

Senior full-stack developer, I design and deploy complete web applications, from front-end to database. I help you transform an idea into a production product: architecture, development, payments, integrations — without needing to coordinate multiple providers.

My stack: Next.js, React, TypeScript, Node.js, Supabase / PostgreSQL, Tailwind CSS, Vercel deployment. I have solid experience with Stripe integration (payments, subscriptions, webhooks) and AI integrations (OpenAI, Gemini).

I designed and run a B2B SaaS platform (CRM + invoicing) alone in production, from architecture to deployment. Before web development, I was a C/C++ software engineer in a critical environment for Thales and Nexter (Linux embedded systems) — experience that taught me rigor, testing, and maintainable code.

I can assist with: feature development, complete application builds, Stripe/Supabase integration, taking over and refactoring existing code, or technical guidance. Immediately available, remote or on-site in Île-de-France.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

Optimass
Full-Stack Developer & Founder
SOFTWARE PUBLISHING
November 2021 - Today (4 years and 8 months)
Mantes-la-Jolie, France
Design and development of a B2B SaaS platform from scratch, with complete autonomy over the entire technical stack.
Key achievements:

• Full-stack Next.js architecture (Pages & App Router), TypeScript, Tailwind CSS, deployed on Vercel.

• Back-end and database on Supabase (PostgreSQL, Auth, Storage, Realtime, Edge Functions).

• Complete integration of Stripe payments and subscriptions: checkout, webhooks, billing cycle management, invoices and addendums.

• AI integrations in production (OpenAI, Google Gemini) for assistance and content generation features.

• Setup of transactional emails (Resend), analytical tracking, and GDPR compliance.
Stack: Next.js, React, TypeScript, Node.js, Supabase, PostgreSQL, Stripe, Tailwind CSS, Vercel.
Next.js Node.js Typescript Stripe Supabase
FDJ
Software Engineer — Development on Gaming Machines
ENTERTAINMENT AND LEISURE
February 2021 - October 2021 (8 months)
Boulogne-Billancourt, France
Development engineer on gaming and lottery machines deployed in several German states, interfaced with the centralized automated prize management system of the FDJ.
• Development and maintenance of software features on machines (embedded systems).

• Integration with the prize management system: processing and validation of gaming transactions.

• Functional testing, validation, bug fixing, and technical documentation.

• Work in a critical environment requiring reliability and robustness.
Environment: C/C++, embedded systems, Git, Agile methodology.
C++ C Qt Embedded systems Agile method
Nexter
Software Design and Development Engineer C/C++
DEFENSE AND MILITARY
July 2019 - October 2020 (1 year and 3 months)
Versailles, France
Development engineer within Nexter's Defense department (KNDS), on a Linux embedded system for military vehicles (VCS/AOC — logbook and vehicle mode management).
• Development of features in C/C++ and component integration.

• Sensor data retrieval via DDS middleware, storage in a database, and extraction in XML format (libxml2).

• Implementation of unit tests and automated testing tools in Python 3.

• Refactoring and optimization of existing code, bug fixing, documentation.

• Software architecture, project estimation, source administration.
Environment: C/C++, Java, Python, libxml2, Qt Creator, embedded Linux, Git, Jenkins, DOORS.
techo: C++, QT,
C C++ Embedded Linux Git Python