Jimmy Lu
Software Engineer at Meta
Menlo Park, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJimmy Lu is a systems-focused software engineer with 14 years of experience building high-performance infrastructure at Meta (Facebook) from Menlo Park. He specializes in low-level languages—C, C++, and Rust—and has a track record of improving performance and reliability in production caches, notably contributing to Facebook’s CacheLib with fixes for memory ordering, NVM optimization, and a new insert API. His background includes kernel- and GPU-level work at NVIDIA and embedded/bootrom development, giving him deep hands-on experience across OS, drivers, and storage layers. Jimmy treats programming as a craft, continually learning functional languages like Haskell and reading widely to bring new ideas into systems design. He is comfortable shipping backend services and internal tools as well as debugging flaky tests and hard-to-reproduce concurrency issues. Colleagues can rely on him for thoughtful, pragmatic solutions that bridge hardware-near concerns and large-scale service requirements.
14 years of coding experience
1 year of employment as a software developer
High School Diploma, High School Diploma at Cetennial Secondary SchoolBachelor, Software Engineering, Bachelor, Software Engineering at University of Waterloo
English, Chinese
Github Skills (12)
algorithm10
algorithms10
caching10
c-language10
cprogramming-language10
performance-optimization10
concurrency9
ssds9
memory-management9
debug8
debugging8
api-design8
Programming languages (4)
Github contributions (5)
facebook/CacheLib
Aug 2021 - Sep 2022
Pluggable in-process caching engine to build and scale high performance services
Role in this project:
Back-end Developer
Back-end DeveloperContributions:57 reviews, 47 commits, 3 PRs in 1 year
Contributions summary:Jimmy primarily contributed to the `cachelib` project, focusing on improving its performance and reliability. Their work involved debugging, fixing test flakiness, and enhancing the codebase with features like a new "insert" API for object cache. They also addressed memory order issues, optimized the NVM cache, and added various stats to better differentiate cache misses. Additionally, the user added functionality to delay worker starts and included documentation.
lrucache-controlpluggablecompile-timecache-engine
therealgymmy/Cool-Stuff
Jun 2012 - Jun 2015
Contributions:25 commits, 2 pushes in 2 years 11 months
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