Etienne Boisson

Research Engineer · AI safety & trustworthy agents

I'm a Research Engineer at Vijil, working on the safety, security and trust of AI agents, from formal guarantees to adversarial red-teaming.

Before that, I spent two years building open medical LLMs with the LiGHT lab (EPFL & Yale) and the MLO lab at EPFL, contributing to Meditron-70B and Llama-3-Meditron. I care about models that are useful where resources are scarce, which also took me to the International Committee of the Red Cross.

I hold an MSc in Data Science and a BSc in Computer Science from EPFL.

News

Jun 2026Joined Vijil as a Research Engineer, working on the safety and security of AI agents.
May 2026Worked on Apertus-Meditron-FO, a medical fine-tune of the fully open Swiss LLM Apertus.
Apr 2025Completed my MSc thesis at Yale University.
Dec 2024Llama-3-Meditron accepted at the GenAI for Health workshop, AAAI 2025.
Oct 2024Moved to New Haven for my MSc thesis at Yale with the LiGHT lab.
Jul 2024Started an internship at the International Committee of the Red Cross: multi-agent LLM chat for low-resource settings.
May 2023GPoeT presented at LaTeCH-CLfL, EACL 2023 in Dubrovnik.

Experience

Research Engineer
Vijil
Safety, security and trust of AI agents: formal guarantees and adversarial red-teaming.
Jun 2026 – Present
Research Associate
LiGHT Lab, EPFL
Worked on Apertus-Meditron-FO, a medical fine-tune of the Swiss LLM Apertus, and the Mediset dataset; training on A100 GPU clusters.
May 2024 – Nov 2025
MSc Thesis & Postgraduate Associate
LiGHT Lab, EPFL & Yale
Safety, instruction following and medical skills of Meditron LLMs (SFT + preference optimisation). Supervised 4 students.
Oct 2024 – Apr 2025
Intern
International Committee of the Red Cross
Multi-agent LLM chat for low-resource settings; ML for budget prediction and resource allocation.
Jul – Aug 2024
Co-Founder & Founding Engineer
Deal'icious (EPFL startup)
App for healthier, affordable food choices. Led vision, architecture and tech decisions.
Sep 2023 – Aug 2024
Research Engineer Student
MLO Lab, EPFL
Core contributor to Meditron-70B: instruction-tuning data, QLoRA fine-tuning and RLHF.
Sep 2023 – Jul 2024
AI Engineer Intern
Synature
Machine learning on audio data for wildlife monitoring.
Jul – Aug 2023

Education

MSc in Data Science (GPA 5.5/6)
EPFL
2022 – 2024
BSc in Computer Science / Communication Systems
EPFL
2018 – 2022