Cristian Munoz
Villalobos

ML Engineer
AI Researcher
Educator

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Making AI systems fairer, more transparent, and actually useful. I design evaluation frameworks, bias mitigation tools, and open-source libraries for responsible AI — bridging the gap between what AI can do and what it should do.

Ph.D. in Electrical Engineering · 15+ publications · NeurIPS, ACL, NAACL · Peru, Brazil, UK

Selected Publications

2025

LibVulnWatch: A Deep Assessment Agent System and Leaderboard for Uncovering Hidden Vulnerabilities in Open-Source AI Libraries

Z. Wu, S. Cho, U. Mohammed, C. Munoz, K. Costa, X. Guan, T. King, Z. Wang, E. Kazim, A. Koshiyama

ACL 2025 · ICML 2025

2025

From Text to Emoji: How PEFT-Driven Personality Manipulation Unleashes the Emoji Potential in LLMs

N. Jain, Z. Wu, C. E. M. Villalobos, A. Hilliard, X. Guan, A. Koshiyama, E. Kazim, P. Treleaven

NAACL 2025 · NeurIPS 2024

2024

THaMES: An End-to-End Tool for Hallucination Mitigation and Evaluation in LLMs

M. Liang, A. Arun, Z. Wu, C. E. M. Villalobos, J. Lutch, E. Kazim, A. Koshiyama, P. Treleaven

NeurIPS 2024 Workshop

2024

Evaluating Explainability for ML Predictions Using Model-Agnostic Metrics

C. E. M. Villalobos, K. da Costa, B. Modenesi, A. S. Koshiyama

arXiv:2302.12094

2023

Uncovering Bias in Face Generation Models

C. E. M. Villalobos, S. Zannone, U. Mohammed, A. S. Koshiyama

arXiv:2302.11562

All publications →

Experience

2022 – Present
Senior Research — Machine Learning Engineer Holistic AI · London, UK
2022 – Present
Data Science Advisor Applied Computational Intelligence Laboratory (ICA) · Rio de Janeiro, Brazil
2021
Consultant — NLP International Labour Organization (ILO) · Lima, Peru
2020
Consultant — AI Systems Holistic AI · London, UK
2018 – 2022
Senior Data Scientist Applied Computational Intelligence Laboratory (ICA) · Rio de Janeiro, Brazil
2016 – 2022
Assistant Professor — NLP & Data Science PUC-Rio & PUCP · Brazil & Peru
2012 – 2018
Researcher Applied Computational Intelligence Laboratory (ICA) · Rio de Janeiro, Brazil

Education

2015 – 2019
Ph.D. Electrical Engineering PUC-Rio · Brazil
2012 – 2014
M.Sc. Electrical Engineering PUC-Rio · Brazil
2005 – 2010
B.Sc. Mechatronics Engineering UNI · Lima, Peru