Mark Sun
Member Of Technical Staff at OpenAI
Mountain View, California, United States
Summary
👤
Senior🎓
Top SchoolMark Sun is a seasoned engineering leader with nine years of experience building and scaling backend, infrastructure, and brokerage systems across startups and large tech firms. Currently a Member of Technical Staff at OpenAI, he previously led Brokerage Infrastructure and Accounting Platform teams at Robinhood and drove backend and infra for Google Chat and Trust & Safety pipelines. He combines a strong product mindset with hands-on systems expertise from kernel-level storage at Oracle to high-throughput backend services and two patents from his time at Clari. Based in Mountain View, he’s equally comfortable shaping technical strategy as he is shipping production-grade code and migrations. A builder at heart—his GitHub motto “builder for the world” reflects a practical focus on durable, scalable systems that bridge research, product, and operations. Notably, his background includes teaching under Alfred Aho and academic research on automated unit testing, underscoring deep roots in core CS principles.
9 years of coding experience
13 years of employment as a software developer
Bachelor of Engineering (B.E.) Computer Software Engineering, Bachelor of Engineering (B.E.) Computer Software Engineering at East China Normal UniversityMaster of Science (M.S.) Computer Science, Master of Science (M.S.) Computer Science at Columbia University
Chinese, English
Github Skills (2)
pinch3
react3
Programming languages (1)
Github contributions (5)
mark-sun/web_demo
Apr 2017 - Aug 2017
Contributions:75 commits, 2 PRs, 150 pushes in 3 months
mark-sun/scripts
Jul 2019 - Aug 2019
Contributions:3 pushes, 1 branch in 27 days
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