Freelancer profile translated to English.
Back to original languageAbout Florian
Senior React Developer 8 years — AI Engineer on generative AI missions
TypeScript full-stack developer for 8 years (École 42, React since 2018). Deep dive into generative AI in 2024, while remaining a versatile senior React / Next.js developer: I take on LLM integration missions, front-end redesigns, architecture audits, or team mentoring.
On the AI side — what I deliver:
→ Chatbots & product copilots (SSE streaming, retry, abort signals)
→ Structured generation (Zod + deterministic outputs)
→ AI Agents & multi-step workflows (Claude Code, custom MCP servers)
→ Full-stack LLM integration (Vercel AI SDK, Claude SDK, OpenAI)
On the classic development side:
→ React / Next.js front-end redesigns (migrations, performance, design systems)
→ Feature-based architecture + comprehensive testing strategy
→ Mentoring & training (TDD, BDD, clean code)
AI Stack: Vercel AI SDK · Claude SDK · OpenAI · MCP · Claude Code · Spec Kit · Zod · SSE
Senior Foundation: React 19 · Next.js 15 · AdonisJS 6 · PostgreSQL · Vitest · Playwright · TDD/BDD · Design Systems
Portfolio:
CortAIx — Thales AI Lab (14 months): MAIA, AI assistant for technicians, Vercel AI SDK + SSE
4 solo AI SaaS projects: GPT-4o / Claude, Spec-Driven Development, MCP, multi-role agents
Luxury E-commerce: Yves Saint Laurent, Alexander McQueen (Kering)
SNCF Connect, Decathlon: design systems, TDD, mentoring
My added value:
-> On the AI side, I don't deliver a POC that crashes in production — testability (MSW), retries, token costs, latency, edge cases.
-> On the development side, solid foundations: feature-based architecture, TDD, design systems.
-> Context engineering so your teams can maintain without dependencies.
Ideal missions: LLM integration, AI POC then industrialization, internal AI agent, React / Next.js redesign, architecture audit, team training.
Saint-Amand-les-Eaux. Remote France / Europe, Lille / Paris site occasional.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 20km), Lille (up to 50km)
Experience
- EntrepreneurSolo AI Projects — AI Engineer Full-Stack (MANGE, BREACH, BatiTrace, GETCRAFT)CONSULTING AND AUDITSMarch 2019 - Today (7 years and 5 months)Paris, France5 AI-native SaaS projects designed solo to explore LLM architectures in production and refine my AI Engineering practices.MUSCLE - AI bodybuilding mobile app: program generation via Vercel AI SDK + Grok 4.1 Fast, structured Zod outputs, real-time adaptation to constraints (injuries, sport), Expo + Supabase + Edge Functions, 31 runtime-switchable themes.MANGE - AI recipe SaaS: generation Vercel AI SDK + GPT-4o, structured Zod outputs, deterministic nutritional calculation based on CIQUAL, Stripe Free/Pro monetization.BREACH - Multi-tenant SaaS Platform: 15 features managed in Spec-Driven Development (Spec Kit), 9 Claude Code slash commands, skill routing and handoff chains.BatiTrace - Full-stack BTP SaaS monorepo (Next.js 15, Expo, AdonisJS 6) with AI confidence scoring and automated QA by AI agents (LLM-as-judge).GETCRAFT - SaaS Framework with 14 custom MCP servers, multi-agent system (Architect, Developer, Tester, Reviewer), YAML workflows.Stack: TypeScript, Next.js 15, AdonisJS 6, Claude SDK, OpenAI, MCP, Claude Code, Spec Kit, Turborepo, PostgreSQL, Stripe
- Thales CortAIxAI Engineer React / Vercel AI SDKDEFENSE AND MILITARYFebruary 2025 - April 2026 (1 year and 2 months)Paris, FranceAI Engineer on two AI products from Thales' AI lab: MAIA (real-time AI assistant for field technicians) and Fit (mission stock management).Integration of Vercel AI SDK + SSE streaming for MAIA's conversational interface, with Axios→fetch bridge for Keycloak authentication.Front-end architecture feature-based + comprehensive testing strategy (MSW for mocking the LLM, Vitest, RTL).Production edge case management: uvicorn / browser keep-alive timeouts, AI SDK retry loops, jsdom abort signals.Design of a reusable internal bootstrap for the lab's React projects.Integration of the Thales Design System on both products.Stack: React, Vite, Vitest, React Query, MSW, Vercel AI SDK, SSE, GitLab
- KeringSenior React Developer Luxury E-commerceLUXURY GOODSMarch 2024 - February 2025 (11 months)Paris, FranceNext.js e-commerce redesign for two houses of the Kering group.Strengthening YSL website reliability: upstream interventions for incident-free deployment.Critical hotfix management during launch, rapid resolution of production issues.Integration of Salesforce Commerce Cloud (SFCC) with Next.js — development of connection modules optimizing performance and UX.
Reviews
Angèle
Soundary Cycle
Reviewed on 6/11/2019
Florian is serious, dedicated, and flexible. He quickly took charge of our website and met all our requests. Moreover, he is responsive and always pleasant. Our collaboration was fruitful and I hope to continue with Florian on future missions.
AD
Account deleted
Reviewed on 3/18/2019
The mission was to create a showcase website, as well as to create and manage the Google Business page for this company. For this website, I had to create 2 mockups for the company to choose from and be satisfied.
Recommendations
FU
FU
+1
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Education
- Scientific Baccalaureate, Engineering ScienceSt Jospeh, St Martin Boulogne2017J'ai obtenu mon baccalauréat scientifique spé science de l'ingénieur
- 42 School TrainingEcole 42Je suis étudiant a l'école 42