James Sun
Member Of Technical Staff at Thinking Machines Lab
San Francisco Bay Area United States
Summary
👤
Senior🎓
Top SchoolJames Sun is a seasoned software engineer specializing in distributed systems, databases, and large-scale ML training platforms, with nine years of industry experience and a PhD in Computer Science from UC Santa Barbara. Based in the San Francisco Bay Area, he helped found Meta's Monarch distributed execution engine and was an early technical lead on Presto, driving 10x latency reductions and contributing vectorized C++ acceleration and SQL engine consolidation. His work spans production reliability features like cluster replication and non-disruptive upgrades from Pure Storage to building pre- and post-training infrastructure for LLMs at Meta. An iOS developer since 2012, he combines systems-level rigor with a breadth of platform experience across storage, query engines, and AI tooling. He is active in open-source governance as a Presto TSC member and committer, and co-authored influential Presto research. Colleagues rely on him to turn hard distributed problems into pragmatic, high-impact systems.
9 years of coding experience
11 years of employment as a software developer
Bachelor's Degree Computer Science, Bachelor's Degree Computer Science at Fudan UniversityDoctor of Philosophy (Ph.D.) Computer Science, Doctor of Philosophy (Ph.D.) Computer Science at UC Santa Barbara
English
Github Skills (17)
swift10
ios9
objective-c9
macos9
cocoapods8
xcode8
carthage7
mach6
homebrew3
parsing3
mach-o3
memory-allocation3
oom3
ruby3
allocation3
Programming languages (2)
Github contributions (5)
iOS-Developer-Sun/MachOView
Jun 2019 - May 2024
MachOView fork
Contributions:12 pushes in 4 years 11 months
cydiaios
iOS-Developer-Sun/Poodle
May 2019 - Jun 2021
Contributions:55 commits, 526 pushes, 11 branches in 2 years 1 month
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