Hangfei Lin
Senior Staff Software Engineer, Machine Learning at Google
Nanjing City, Jiangsu, United States
Summary
👤
Senior🎓
Top SchoolHangfei Lin is a Staff Software Engineer with nine years of experience building large-scale AI infrastructure and feature/model-serving systems, currently working on Gemini post-training, agents RL, and contributing to Google’s adk-python. Previously at LinkedIn he architected Feathr feature store pipelines, large-model training, and embedding-based retrieval, scaling feature and label preparation for production workloads. He combines hands-on systems engineering with product-minded design, informed by user studies and extensive work in open-source community management and advisory roles since 2015. His background spans data analytics and materials science research, reflecting a rare blend of deep engineering, applied research, and product innovation. Based in Nanjing, he brings cross-cultural experience across U.S. and China engineering environments and a Stanford Ignite certificate in innovation and entrepreneurship. A subtle throughline in his career is turning research-grade ideas into resilient, production-grade infrastructure that serves real ML workloads.
9 years of coding experience
10 years of employment as a software developer
Stanford Ignite, Certificate Program in Innovation and Entrepreneurship, Stanford Ignite, Certificate Program in Innovation and Entrepreneurship at Stanford University Graduate School of BusinessArtificial Intelligence Graduate Certificate, Artificial Intelligence, Artificial Intelligence Graduate Certificate, Artificial Intelligence at Stanford UniversityBachelor of Science (BS), Condensed Matter and Materials Physics, Bachelor of Science (BS), Condensed Matter and Materials Physics at Nanjing UniversityMaster of Science (MS), Computer and Information Sciences, General, Master of Science (MS), Computer and Information Sciences, General at University of Pennsylvania
English, Chinese, Japanese
Stackoverflow
107reputation
6kreached
3answers
0questions
Github Skills (12)
native-api10
api-gateway10
cloud-native9
ai9
django-models6
python6
rest6
mocking6
integration-testing6
mockito6
django6
inference1
Programming languages (3)
Github contributions (5)
waveBridge/PECRP
Sep 2017 - May 2018
Contributions:37 commits, 34 pushes in 8 months
mirror58229/higress
Dec 2024 - Aug 2025
🤖 AI Gateway | AI Native API Gateway
Contributions:47 pushes, 9 branches in 7 months
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