Freelancer profile translated to English.
Back to original languageAbout François
Hello, my name is François, I am 28 years old and I am passionate about new technologies.
In recent years, I have specialized in SaaS applications, deepening my technical skills on a specific stack, and I have had the opportunity to evolve as a lead developer and then CTO.
My favorite stack is based on modern technologies: Next.js for high-performance applications (server-side rendering and SEO), Prisma ORM with PostgreSQL for typed and fast database management, TypeScript on front and back for maintainable code without runtime errors, and of course React.js on the front end. For asynchronous processing and background tasks, I use BullMQ.
Beyond this technical stack, I master the essential tools of a SaaS environment: Stripe for payment management and Resend for transactional emails.
On the infrastructure side, I work with Git (GitHub or any other versioning system) and cloud platforms such as Vercel, Scaleway, OVH or DigitalOcean, including self-hosted configurations via Coolify. I am sensitive to data sovereignty issues, particularly for clients subject to regulatory constraints.
I am also comfortable with LLM APIs (OpenAI, Anthropic, Mistral) to integrate AI functionalities: conversational assistants, process automation, agents. I have notably built end-to-end AI-native products.
Finally, I have had the opportunity to recruit developers and support them in their skill development. For over two years, I have been bringing my expertise to teams through code reviews and daily knowledge sharing.
French
Native or bilingual
English
Native or bilingual
Can work on-site
Bordeaux (up to 50km)
Experience
- Freelance ZenfirstLead Fullstack DeveloperJuly 2024 - Today (2 years and 1 month)Bordeaux, FranceSetup of ISO Prod Test environments. Recruitment of new developers. Making long-term technical decisions for the company. Implementation of technologies and coding rules. Development of an OCR module for invoices (pdf, png, etc.). Creation of a test case for the scalability of a complex cash flow monitoring web app, then complete refactoring of the back-end for the planned load increase. Fullstack Next.js development of a portal for taking and managing subscriptions for the company's various software, with Stripe. Feasibility study for complete refactoring with improvements of a billing and profitability web app.
- UmbraCTO and DeveloperSOFTWARE PUBLISHINGAugust 2023 - Today (3 years)Bordeaux, FranceDevelopment and maintenance of a white-label cash flow forecasting application. Connected to existing accounting tools.
- CDI DarwinXLead Fullstack DeveloperOctober 2022 - July 2023 (9 months)Paris, FranceDevelopment of a fullstack data-visualization web app React.js, Node.js & Postresql (DigitalOcean infra) for L'Oréal as well as a web scraper (multi-proxy, puppeteer, llm) to provide the data. Recruitment of new developers. Implementation of code review rituals and improvement of code base quality.
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Education
- Computer Science Expert (Master's degree)Epitech2021
- Master of Computer Science (Master's degree)Kent2020