Hi, I’m Luca Engel (MSc CS) – AI Research Engineer.
Assistant Researcher at Oracle
Working on Oracle Agent Memory
Master's in Computer Science at EPFL
Specialization in Data Analytics
I hold a Master's degree in Computer Science from EPFL, one of the world's top technical universities. My work focuses on AI research. I have worked on Oracle Agent Memory, LLM alignment and fine-tuning, healthcare process automation, speech classification, question answering systems, and music and document recommendation.
Featured projects
Constitutional DPO: Mitigating Sycophancy in a Small LLM
Sep 2026A Constitutional AI-based DPO pipeline that fine-tunes a 4B model to resist sycophancy under unsubstantiated pushback, compared against a plain-preference DPO control run through the identical pipeline, with confound checks and bootstrap significance testing.
Agentic Python Fixer
Oct 2025An LLM-driven automatic Python bug fixer using the ReAct framework and LangGraph to iteratively repair code until all tests pass, executing fixes safely inside a Docker sandbox.
AI and Knowledge Graphs for Invoice Verification
Sep 2025Master’s thesis at EPFL with ELCA on combining knowledge graphs and large language models for automating Swiss medical invoice verification, including tariff prediction, Text2Cypher translation, and explainable rejection reasoning.