AI engineering experience: Founder & AI Engineer, Plaidoyer.ai, London, 01/2026 to present I built a software platform that helps French lawyers quickly find legal information, manage case documents securely, and use AI to assist with research and client communication, ensuring full privacy compliance. Responsibilities: - Developed hybrid retrieval pipeline using PostgreSQL pgvector and HNSW indexing for 2.9M+ French legal documents - Implemented semantic search with BGE-M3 embeddings and full-text search capabilities - Integrated cross-encoder reranking and HyDE query expansion for improved search accuracy - Designed LLM-based query requalification with conversational clarification loop - Built RAG assistant for document chat with strict tenant isolation and prompt-injection defenses - Engineered data ingestion pipeline from LegiFrance/DILA APIs with rate-limited batch extraction - Architected compliance-first LLM system ensuring EU-only inference and zero data retention - Developed backend with FastAPI, SQLAlchemy, and Alembic + frontend using React and TypeScript - Deployed and managed infrastructure on Hetzner and AWS platforms (Python, AWS, Docker, Linux, Alembic, HNSW, TypeScript, SQLAlchemy, Hetzner, LLM, FastAPI, React, Amazon S3, JWT, Mistral AI, Rag, BGE-M3, PostgreSQL, Pgvector)