Liam Song
Summary
Fangrui Song is a Staff Software Engineer based in the San Francisco Bay Area with eight years of experience specializing in compiler and toolchain engineering. He is a prolific LLVM contributor (5,500+ commits) and maintainer across Clang Driver, LLD ELF, LLVM binary utilities, MC, libunwind, and libc++abi, with work spanning sanitizers, coverage, debug info, and both middle- and back-end optimizations. Previously a long-tenured C++ toolchain engineer at Google and now at Tesla, he brings production-grade experience shipping compiler infrastructure at scale. Beyond compilers, Fangrui has deep interests in HPC (led Tsinghua to overall win at ASC'15 student cluster competitions), information security (DEF CON CTF finalist), and functional programming—he translated Learn You a Haskell into Chinese. His profile combines high-impact open-source maintenance with competitive programming pedigree and hands-on systems security and research experience. Colleagues can expect a rare blend of low-level systems expertise, fierce attention to correctness, and an appetite for elegant functional ideas.
7 years of coding experience
Github Skills (13)
medical7
simulation6
physics6
simulator5
engine5
cpp4
robotics4
webots4
ros4
sofa-framework3
backend2
opengl1
imgui1
Programming languages (2)
Github contributions (5)
DrWiki/AllianceSentry
Jun 2019 - Jun 2019
Contributions:12 commits, 10 pushes, 2 branches in 1 day
DrWiki/UI_paper-master
Aug 2022 - Feb 2023
Contributions:4 pushes, 2 branches in 5 months
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