Nelson Liu
Principal Research Scientist, Applied ML at Uncharted Software
Old Toronto, Ontario, Canada
Summary
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Senior🎓
Top SchoolNelson Liu is a Principal Research Scientist in applied machine learning with a decade of experience building end-to-end, production-ready ML pipelines and interactive visualization workbenches. With a PhD in Physics from the University of Toronto, he blends rigorous academic research—including international collaborations and high-impact publications—with pragmatic engineering skills in Python, PyTorch-Lightning, Docker, and cloud storage. He has led projects that turn noisy, multilingual data into actionable insights (e.g., narrative detection with Sentence-BERT, PEGASUS, HDBSCAN, UMAP) and has applied graph embedding techniques to visualize malware-infected memory dumps and large knowledge graphs. Comfortable liaising with domain experts, designers, and stakeholders, Nelson is multilingual (English, French, Cantonese) and routinely translates state-of-the-art research into deployable systems. His background in ultrafast electron diffraction and numerical modeling gives him a rare combination of physical-science intuition and scalable ML product delivery.
10 years of coding experience
5 years of employment as a software developer
Doctor of Philosophy - PhD Physics, Doctor of Philosophy - PhD Physics at University of TorontoBachelor’s Degree Joint Honours in Physics and Chemistry, Bachelor’s Degree Joint Honours in Physics and Chemistry at McGill University
English, French, Chinese
Github Skills (16)
prototypes9
jupyter-kernels9
systems-biology8
jupyterlab8
ontologies8
jupyter6
modeling6
differential-equations5
llm3
transform1
chemistry1
petri-net1
computer-algebra1
interval-arithmetic1
data-service1
Programming languages (6)
Github contributions (5)
liunelson/mira
Jul 2023 - Mar 2025
MIRA modeling framework
Contributions:2 PRs, 135 pushes, 1 branch in 1 year 8 months
liunelson/pyciemss
Aug 2023 - Feb 2025
Causal and probabilistic reasoning with continuous time dynamical systems
Contributions:4 PRs, 77 pushes, 4 branches in 1 year 6 months
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