Yuxuan Chen
Software Engineer at Meta
California, United States
Summary
🤩
Rockstar🎓
Top SchoolYuxuan Chen is a software engineer with 11 years of experience specializing in programming languages, compilers, and runtime systems, currently working in Meta’s Programming Languages and Runtimes group. He contributes to high-impact open-source compiler projects including LLVM and HHVM, where his work on coroutine heap allocation and clang attributes reduced memory overhead and improved compilation behavior. At Facebook he also improved Android bytecode optimization in Redex through precise constant propagation and code refactors that sharpened analysis and transformation phases. A Purdue CS honors graduate (GPA 3.89), he blends research interests in static analysis and security with pragmatic backend engineering on clang, libc++, and large toolchains. Based in California, Yuxuan is known for tackling low-level, performance-sensitive problems that quietly unlock better developer tooling and runtime efficiency. His contributions often surface in subtle correctness and optimization fixes that ripple across widely used compiler infrastructure.
11 years of coding experience
Bachelor of Science with Distinction, Computer Science Honors, GPA: 3.89/4.00, Bachelor of Science with Distinction, Computer Science Honors, GPA: 3.89/4.00 at Purdue University
English, Chinese
Stackoverflow
11reputation
33kreached
1answer
1question
Github Skills (27)
code-optimization10
c-language10
llvm10
hacking10
hhvm10
bytecode10
compiler-optimization10
coroutines10
cprogramming-language10
optimization10
data-structure9
algorithms9
standard-library9
stl9
data-structures9
Programming languages (12)
Github contributions (5)
facebook/redex
Mar 2019 - Nov 2022
A bytecode optimizer for Android apps
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 334 commits, 24 PRs in 3 years 8 months
Contributions summary:Yuxuan primarily contributed to the bytecode optimization aspects of the "facebook/redex" repository, focusing on refining and improving the analysis and transformation phases of the bytecode optimizer for Android applications. Their work involved implementing constant propagation for various bytecode instructions, including reverse subtraction and bitwise operations, and refactoring existing code to improve efficiency. They also made code changes, which introduced features like imposing instruction size limits and created test cases to validate their contributions.
android-appsandroidbytecodekotlinoptimizer
llvm/llvm-project
Dec 2019 - Feb 2025
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Role in this project:Back-end Developer
Back-end DeveloperContributions:78 reviews, 75 PRs, 98 pushes in 5 years 3 months
Contributions summary:Yuxuan primarily contributed to the LLVM project, focusing on compiler infrastructure and optimization. Their work involved refactoring and improving coroutine-related code, specifically the CoroElide transformation. They implemented changes to manage and optimize coroutine heap allocations, including introducing a `noalloc` variant for improved performance. Furthermore, the user addressed issues and optimized the call graph management.
compilerstechnologiesclangsubmittoolchain
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