09/17/2026 updated
100 % available
Senior Full-Stack Engineer · Applied AI / LLM / Agents | TypeScript · React · Next.js · Python
Bastia, France
Only remote
MSc Computer Science, EPITECH ParisAbout me
Senior full-stack engineer (ten years): production LLM/agent systems, measurable and safe to operate (threat modelling, evals, prompt-injection testing, red-teaming). 2 AI products shipped for clients, 3 personal LLM systems.
AI AgentsGitHub ActionsLLMGeminiOllamaJavaScriptPHPWeb AccessibilityArtificial IntelligenceAWK (Programming Language)DjangoPython (Programming Language)PostgreSQLNode.jsRuby On Rails
AI / LLM / Agents
Production LLM and agent systems: an LLM agent (Anthropic API) that produces a B2B platform's end output; structured outputs with Zod and Pydantic; embeddings with pgvector; local models via Ollama; evaluation harnesses; SSE streaming. APIs: Anthropic, Gemini, OpenAI.
Backend & Full-Stack Engineering (Python, Node.js, Go)
Full-stack development in Python (Django, FastAPI, SQLAlchemy), Node.js (Express, Hono), Go and PHP/Symfony, with PostgreSQL, pgvector, SQLite, DynamoDB and MongoDB.
Frontend Development (React, Next.js, TypeScript)
Expertise in building modern frontend applications using React, Next.js, Angular, TypeScript, Tailwind, Redux, D3.js, React Native, and Electron, including accessibility standards such as WCAG 2.2 AA and advanced performance optimizations like SSR and ISR.
LLM System Architecture (End-to-End)
Design and delivery of personal LLM systems end-to-end, including a Chrome extension with a Gemini consensus pipeline, a multimodal Etsy listing engine using Claude and EmbeddingGemma, and a pain-signal mining pipeline running 24/7 on a Raspberry Pi.
Client SDK Development (Multi-language)
Development of client SDKs in 8 languages including Go, C#, PHP, Node.js, Java, Rust, Ruby, and Python, with 11 framework integrations spanning ASP.NET, Spring Boot, FastAPI, Django, Rails, and Next.js.
Cloud Infrastructure & DevOps (AWS, Cloudflare, Docker)
Proficiency with AWS services (Lambda, AppSync, DynamoDB, S3, EC2), Cloudflare (Workers, Pages, D1), Vercel, Docker, TurboRepo, and uv for deployment and infrastructure management.
Testing & Quality Assurance
Strong testing culture using Jest, Vitest, pytest, Hypothesis, Cypress, and Playwright, applying TDD practices across Windows, macOS, and Linux environments.
Technical Leadership & Mentoring
Experience leading frontend teams from 0 to 10 engineers, onboarding C/C# developers onto modern web stacks, and providing part-time technical mentoring in React, Next.js, TypeScript, Node.js, and Python.
Stripe & Payment Integration
Integration of Stripe for offline payments, including a Kotlin Android app for Stripe offline payments deployed on ferries, as well as metered credit billing in LLM-powered applications.
Experience
Professional experience5 - 10 years
Freelancer since2016
Languages
EnglishFluentFrenchNative speakerPortugueseGood
Project history
Part-time technical mentor: one-to-one video coaching for full-stack learners on React, Next.js, TypeScript, Node.js and Python, alongside my freelance work.
Scoped the platform with the founders and built it full-stack: an LLM agent (Anthropic API) that produces the platform's end output, Hono backend, Angular dashboard, CLI, Electron app; client SDKs in 8 languages and 11 framework integrations. Remote contract under NDA.
First frontend hire; shipped a production MVP in 14 days with the CTO: a photo and a prompt, and a multimodal model cartoonizes the user into a video. Owned frontend architecture on a 3-engineer team and led pre-launch performance work including SSR, ISR, and bundle optimization. New York, remote contract.