Sergius Justus C. Nyah

I'm a Machine Learning Researcher and Software Engineer. I work on causal and multilingual NLP, LLMs, medical AI, and geometric deep learning. I'm currently an ML Researcher at the University of Toronto's Jinesis AI Lab. I hold a B.S. in Computer Science from the University of Buea. My M.Sc. starts in November 2026.

My research began at MIT CSAIL, through the MIT Summer Geometry Initiative. I was 1 of 32 global fellows, and one of two from Africa. I worked as a Research Fellow under Professor Justin Solomon's Geometric Data Group, mentored by Dr. Karthik Gopinath of Harvard Medical School. That work became my first-author paper at IEEE EMBC 2026.

I later researched multilingual LLM robustness at the Fatima Institute for Global AI Research, with the Stanford NLP Group and Georgia Tech. I co-authored "To Lie or Not to Lie?", accepted to ACL 2026 with a Senior Area Chair Highlight Award. I also spent a summer at EPFL's LiGHT Lab, building survival models for Ebola Virus Disease.

On the engineering side, I've shipped production ML and full-stack systems at Engineering for Change and Hometeam Ventures. I kept telecom infrastructure running at Huawei. I build retrieval pipelines, research platforms, and monitoring systems that real teams use daily.

Outside research, I'm a Christian. I play piano and bass guitar, and led music ministry at CMFI Molyko in Buea. I support FC Barcelona.