Wei S is a Principal Software Engineer in San Francisco with 11 years of experience building AI, distributed systems, and full-stack products informed by a PhD in Physics from MIT. He has been a founding engineer or early contributor to high-impact projects—cofounded ProtonMail and helped launch Data Commons, and later shaped core AI APIs and multi-agent orchestration at OpenAI. His background spans top research institutions and industry (CERN, NASA, Oracle, Google), where he applied machine learning to petabyte-scale scientific data and to production systems that serve billions. Known for shipping infrastructure-grade systems—image/video generation, code execution sandboxes, retrieval and responses APIs—he blends deep research instincts with pragmatic engineering. Notably, he built ProtonMail’s initial end-to-end encryption and architected large-scale knowledge graph infrastructure, showing a rare mix of security, distributed data, and AI expertise. Colleagues describe him as a technical founder who moves quickly from prototype to resilient, high-traffic production services.
11 years of coding experience
14 years of employment as a software developer
Doctor of Philosophy (Ph.D.), Physics, Doctor of Philosophy (Ph.D.), Physics at Massachusetts Institute of Technology
Bachelor's degree, Physics, Bachelor's degree, Physics at University of Science and Technology of China
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