Jiefu Zheng
Staff Machine Learning Engineer at Meta
San Francisco Bay Area United States
Summary
👤
Senior🎓
Top SchoolJiefu Zheng is a Staff Machine Learning Engineer based in the San Francisco Bay Area with over a decade of experience building large-scale ML systems across Ads, Search, Recommendations, and Payment Risk. He has driven measurable product impact—most recently boosting Discover Ads revenue by 30%+ at Google—while balancing multi-objective trade-offs like revenue versus user experience and resource cost. Skilled across the full pipeline from retrieval and indexing to ranking and fraud detection, he pairs solid theoretical foundations (PhD-level engineering training) with production-grade engineering and cross-functional tech leadership. An active practitioner in Generative AI and LLMs, he has won internal competitions for LLM fine-tuning and Ads monetization and has hands-on experience hosting generative models in production. Notably, his work spans both real-time fraud prevention using relational graph mining and large-scale ads auction optimization, demonstrating a rare blend of experimentation, systems design, and operational rigor.
11 years of coding experience
12 years of employment as a software developer
B.S. in Mathematics Operations Research, B.S. in Mathematics Operations Research at Nanjing UniversityDoctor of Philosophy Engineering, Doctor of Philosophy Engineering at Boston University
English, Chinese, Chinese
Github Skills (7)
jupyter-notebook3
jupyter2
arcanist2
vim2
phabricator1
vim-plugin1
neovim1
Programming languages (2)
Github contributions (5)
dreamingbird88/programming
Jun 2015 - Jun 2018
Contributions:64 pushes, 1 branch in 2 years 11 months
dreamingbird88/for_qi
Jan 2016 - Jun 2016
Contributions:6 pushes, 1 branch in 5 months
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