About Pierre-Hadrien
French
Native or bilingual
English
Native or bilingual
Dutch
Basic
Experience
- Coalesce AutomationAI Software Engineer Intern (LLMs & RAG)TECHSeptember 2025 - March 2026 (6 months)Paris, France• Designed and maintained a production RAG system for natural language querying of customer's data warehouse, using OpenSearch, vector search, APIs and GraphQL, deployed on Docker-based infrastructure.• Built production evaluation without labeled data: synthetic query generation and end-to-end metrics to guide product decisions.• Prototyped and shipped agent orchestration (LangGraph) combining hybrid retrieval and deterministic logic, improving reliability and enabling fast iteration ( 65% to 95%).
- School of Computer ScienceStudent Assistant, EPFLEDUCATION AND E-LEARNINGJanuary 2023 - January 2025 (2 years)Lausanne, Switzerland• Teaching Assistant: Intro to Programming, Computer Systems, Software Security, Responsible Software.• Student support; grading of projects and final exams.
- Junior Entreprise EPFLPython DeveloperAVIATION AND AEROSPACEJanuary 2022 - January 2024 (2 years)Lausanne, Switzerland• Coded a real-time analytics solution for gas-detecting industrial drones at a Swiss start-up.• Full-stack development of the entire software in Python.
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Education
- Master Ingénieur en Data ScienceEPFL, Swiss Federal Institute of Technology Lausanne2026Master Ingénieur en Data Science
- Bachelor en InformatiqueEPFL, École Polytechnique Féderale de Lausanne2023Bachelor en Informatique