John Simmons
Principal Software Engineer at Facebook
San Francisco Bay Area United States
Summary
👤
Senior🎓
Top SchoolJohn Simmons is a Principal Software Engineer in the San Francisco Bay Area with 17 years of experience building database infrastructure, developer tools, and ML infrastructure at leading tech firms. He has driven core infrastructure and graph/relational systems at Facebook after earlier ML and graph work at Google and Two Sigma, and his background includes pioneering research in deep relational networks tied to scalable database deployments. Comfortable at the intersection of research and production, he has repeatedly led teams that turn advanced models and graph technologies into reliable, large-scale developer tooling. His career trajectory—from forward-deployed database development at Palantir to PhD-level AI research at MIT—reflects a blend of hands-on systems engineering and deep algorithmic insight. Peers describe him as a builder who anticipates developer needs and operationalizes cutting-edge research into dependable infrastructure.
17 years of coding experience
10 years of employment as a software developer
Doctor of Philosophy - PhD Artificial Intelligence, Doctor of Philosophy - PhD Artificial Intelligence at Massachusetts Institute of TechnologyMaster of Business Administration - MBA, Master of Business Administration - MBA at Harvard UniversityComputer science, Computer science at Stanford University
Github Skills (18)
sounds10
chromium10
chrome10
approximation10
chrome-extension9
speech9
javascript7
src7
os-development7
collaboration7
fltk5
parsing4
tilesets4
tilemap4
map-editor4
Programming languages (4)
Github contributions (5)
Acedio/nes-forth
Dec 2017 - Sep 2023
Contributions:4 pushes, 1 branch, 2 comments in 5 years 9 months
Acedio/dotfiles
Aug 2015 - Mar 2022
Contributions:29 pushes, 1 branch in 6 years 8 months
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