Yifan Yang
Member Of Technical Staff at xAI
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolYifan Yang is a senior machine learning and software engineer with nine years of experience building large-scale ML systems, ads ranking models, and production data pipelines for companies including TikTok, Meta, xAI, Airbnb, and Microsoft Research Asia. He combines research-grade ML (pretraining and LLM work on projects like Seed-thinking-1.5 and llama4) with pragmatic engineering—designing high-throughput C++/Java backends, streaming/batch pipelines, and production-ready ranking and ad-delivery systems that moved two-digit revenue improvements. A Carnegie Mellon MS graduate with strong ML research roots, he has a track record of shipping end-to-end solutions from model pretraining to SFT and RLHF, and has experience improving model efficiency, distillation, and reproducibility at scale. Notably, his background spans both contest-style algorithmic problem solving and hands-on contributions to open frameworks during internships, reflecting rare breadth across low-level systems, large-scale ML, and product impact.
9 years of coding experience
8 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Peking UniversityMaster of Science (MS), Computer Science, 4.08/4.30, Master of Science (MS), Computer Science, 4.08/4.30 at Carnegie Mellon UniversityHigh School Diploma, High School Diploma at The First High School of Changsha, Hunan
English, Chinese
Github Skills (10)
proxy9
javascript8
clash8
vpn8
documentation7
v2ray5
autodeploy4
publish3
gitee3
github2
Programming languages (3)
Github contributions (5)
jiegouyun/outreaderjs
May 2020 - Apr 2022
A structral model (YJK, PKPM, ETABS) output files reader implemented in Javascript.
Contributions:142 commits, 16 PRs, 8 pushes in 1 year 11 months
javascriptyjkpkpm
ym6/job-listing
Apr 2017 - May 2018
Contributions:1 push, 2 branches in 1 year 1 month
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