Freelancer profile translated to English.

Description

Senior Full Stack & AI Engineer with 10 years of experience in the JavaScript/TypeScript ecosystem. Specializing in the design of scalable SaaS solutions integrating generative AI (LLM, RAG, LangChain, LangGraph).

Accustomed to working closely with product and business teams, I support projects from ideation to scaling by transforming complex challenges into high-performing, monetized, and user-oriented solutions, with a strong culture of quality, performance, and delivery.

#Skills:

Generative AI: LLM (OpenAI, Claude, Gemini), RAG, LangChainJS, LangGraph, Vector Databases, Embeddings
Frontend: Next.js, ReactJS, VueJS
Backend: Node.js (NestJS, Express, Koa Typescript, Hono), PHP
Mobile: Ionic, ReactNative
SaaS Architecture: Multi-tenant, APIs, Auth, Billing & Payments (Stripe), LLM Cost Monitoring
Cloud & Data: AWS, GCP, Vercel, PostgreSQL, MongoDB, Redis, MySQL
DevOps: Docker, CI/CD (GitHub Actions, GitLab CI, Jenkins)
Leadership: Technical Lead, mentoring, code reviews, pair programming

Available for full-stack opportunities with a product focus.

Industry field of expertise

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Can work on-site

Paris (up to 50km), Paris (up to 10km)

Mindly
Software Engineer & Confirmed AI Developer - LLM, LangChain, Vector Search
EDUCATION AND E-LEARNING
December 2024 - December 2025 (1 year)
Paris, France
Mindly is the first learning platform that combines cognitive science and Artificial Intelligence.
Mindly transforms student notes into:

- Development of an AI EdTech tutor based on student course materials.
- Design of a Knowledge Engine: document ingestion, knowledge graphs, and RAG pipelines.
- Significant reduction of AI hallucinations through a response engine constrained by sources.
LLM Node.js MongoDB Langchain Vector database
Tech Lead - AI Engineer
Creator & Maintainer
SOFTWARE PUBLISHING
October 2024 - Today (1 year and 10 months)
Paris, France
Hosby is a Backend-as-a-Service (BaaS) platform designed for front-end and Mobile developers. It allows creating, exposing, and securing APIs without writing backend code.

- Design of the platform's core engine, capable of dynamically generating APIs from custom schemas or via integrated AI (developers can generate a data structure through an AI query), simplifying backend deployment.

- Maintenance of Hosby's official SDK, enabling seamless integration into front-end and mobile projects (Next.js, React, Vue, Svelte, Angular, React Native, Ionic...).

- Implementation of an API key management system (public/private), with CSRF protection, access control, and integrated authentication.
Generative AI Typescript React.js Langchain NestJs
Niji
Frontend Engineer Lead Hands-on
June 2024 - February 2025 (8 months)
Nantes, France
Tasks performed:
• Site performance improvement.
• Clean code
• Team supervision.
• Pair programming
• Reviews and corrections of commits before deployment.
• Continuous integration.
Technical environment: NextJS, TypeScript, ChakraUI, JIRA, SWR, Adyen, Git CI/CD