Haichen Liu
Member Of Technical Staff at xAI
San Francisco Bay Area United States
Summary
👤
Senior🎓
Top SchoolHaichen Liu is a software engineer with a decade of experience building high-performance backend and desktop systems, currently at Meta after recent engineering roles at xAI and Pinterest. He has deep C++ expertise used to design ads retrieval and ML infrastructure at Pinterest, and a strong web and cross-platform background from shipping desktop UI frameworks and Chromium-based integrations at Dropbox. Haichen’s work spans languages (C++, PHP, JavaScript, C#) and roles from hands-on optimization to technical leadership, improving performance and stability at scale for millions of users. He brings practical experience in search and ads infra, product-facing APIs, and telemetry-driven debugging of threading and multi-process bottlenecks. Based in the San Francisco Bay Area with an MS in Computer Science from the University of Chicago, he combines systems-level thinking with product sensibility to move projects from prototyping to production. An understated strength is his track record of reducing real-user resource usage through targeted performance engineering rather than purely feature work.
10 years of coding experience
11 years of employment as a software developer
Computer Science, Computer Science at Stanford UniversityMaster of Science (MS) Computer Science, Master of Science (MS) Computer Science at University of ChicagoBachelor's degree Electrical and Electronics Engineering, Bachelor's degree Electrical and Electronics Engineering at Shanghai Jiao Tong University
Chinese
Github Skills (9)
selenium-webdriver9
mink8
geckodriver8
facebook8
selenium7
php-webdriver7
php6
webdriver6
plaid2
Programming languages (2)
Github contributions (4)
HaichenLiu/WallaceBot
May 2016 - May 2016
Contributions:9 pushes, 1 branch in 1 day
NiFTyRent/nft-rental
Jan 2023 - Mar 2023
Contributions:15 reviews, 22 commits, 34 PRs in 2 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.