Leonard Chan
Software Engineer at Gotta increase that Github score
Philadelphia, Pennsylvania, United States
Summary
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Rockstar🎓
Top SchoolLeonard Chan is a software engineer with 11 years of experience specializing in developer-facing frameworks and productivity tools, primarily written in Python. He builds tooling that helps other developers and applications run more efficiently, and is currently developing a compiler to translate Python into optimized C for performance gains. Leonard contributes to high-profile open-source compiler work—having fixed data races in compiler-rt, added AArch64 fixed-point support, and improved lld handling for ARM/Thumb PLTs in the LLVM project—demonstrating deep systems and compiler expertise. Based in Philadelphia, he blends a computer and electrical engineering background from Drexel with practical backend development skills. His work reveals an uncommon focus: marrying Python-friendly ergonomics with low-level, performance-oriented compiler optimizations.
11 years of coding experience
Bachelor's Degree, Computer Engineering, Electrical Engineering, Senior, Bachelor's Degree, Computer Engineering, Electrical Engineering, Senior at Drexel University
English
Stackoverflow
951reputation
92kreached
44answers
20questions
Github Skills (19)
c-language10
llvm10
compiler-design10
rt10
arm10
cprogramming-language10
fixed-point9
c119
fixed9
c179
fixed-width9
dictionary6
android6
dns6
mocking6
Programming languages (16)
Github contributions (5)
llvm/llvm-project
Feb 2019 - Jul 2026
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Role in this project:
Backend Developer
Backend DeveloperContributions:195 reviews, 157 PRs, 279 pushes in 7 years 6 months
Contributions summary:Leonard contributed to the LLVM project by addressing compiler-related issues, specifically those related to the compiler-rt and lld components. The user fixed a data race issue in compiler-rt's asan component and implemented support for fixed-point multiplication on AArch64 architecture. They also worked on supporting thumb PLTs within lld, which is relevant for ARM architecture-based systems. Furthermore, the user optimized global name usage in RelLookupTableConverter, and added core support for the libc project.
compilerllvmtoolchain
PiJoules/llvm-project
Sep 2023 - Apr 2026
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Contributions:1 PR, 266 pushes, 171 branches in 2 years 7 months
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