Kim Morrison
Research Software Engineer at Lean FRO
North Canberra, Australia
Summary
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Rockstar🎓
Top SchoolKim Morrison is a research software engineer with 15 years of experience bridging advanced mathematics and formal verification, currently contributing to Lean FRO from North Canberra. Trained as a PhD mathematician at UC Berkeley and a former professor at ANU, Kim brings deep theoretical expertise to production-grade theorem proving projects. They have made substantial back-end contributions to the widely used Lean theorem prover and its mathlib libraries, improving core tactics, symbolic lemmas for Option/Bool/List, and performance-sensitive tooling. Past research roles at UC Berkeley’s Miller Institute and Microsoft Station Q reflect a career-long focus on rigorous, foundational problems in mathematics and computation. Kim combines academic rigor with pragmatic software engineering—refactoring complex algebra and category-theory modules into maintainable library code. An understated strength is translating intricate formal proofs into robust, test-covered code that advances both research and developer tooling.
15 years of coding experience
2 years of employment as a software developer
Doctor of Philosophy - PhD, Mathematics, Doctor of Philosophy - PhD, Mathematics at University of California, Berkeley
Github Skills (21)
programming-language10
develop10
proofs10
mathematical10
proof10
tactics10
formal-verification10
abstract-algebra10
category-theory10
slim10
t410
leanback10
r9
data-structure9
algorithm9
Programming languages (20)
Github contributions (5)
leanprover-community/mathlib4
May 2021 - Jan 2023
The math library of Lean 4
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2610 reviews, 461 commits, 1854 PRs in 1 year 8 months
Contributions summary:Kim implemented a time command and test cases for ring and split functionalities within the Lean 4 math library. Additionally, the user performed updates, fixed naming issues, and contributed to building of core tools such as `apply_rules`, `convert` and `solve_by_elim` in the tactics section. The user also added tests and documentation enhancements as well as contributed to adding a few new features.
maththeorem-provingcomputer-algebra-systemmathematicsin-progress
leanprover-community/mathlib3
Aug 2017 - Jan 2023
Lean 3's obsolete mathematical components library: please use mathlib4
Role in this project:Back-end Developer
Back-end DeveloperContributions:2119 reviews, 3738 commits, 1364 PRs in 5 years 5 months
Contributions summary:Kim contributed to the mathlib3 repository, a mathematical components library, by implementing, refactoring, and refactoring mathematical components. They added features to the `analysis/normed_space` and `topology/algebra/continuous_functions` modules. The user was also responsible for refactoring category theory and algebra modules.
maththeorem-provingcomponents-librarymathematicsjavascript
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