John Heyer
Founding Member Of Technical Staff at depthfirst
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolJohn Heyer is a seasoned machine learning engineer with 17 years of experience, blending academic rigor from MIT (MEng CS & AI) with hands-on product work across startups and large tech. He has driven ML research into production at Amazon (improving Alexa QA), helped launch models and analytics at ChipBrain, and now builds Models-as-a-Service and AI security capabilities at Scale AI and depthfirst. Comfortable across research and engineering, he has taught MIT’s Intro to ML and applied Bayesian inference and CNNs in high‑impact scientific projects like NuSTAR and IceCube. John’s background shows a pattern of turning advanced probabilistic and deep learning methods into robust services and tools for enterprise and consumer applications. Based in San Francisco, he pairs founding‑team grit with enterprise-grade ML engineering and a quirky fondness for bacon that suggests a pragmatic, personable collaborator.
17 years of coding experience
6 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at Massachusetts Institute of Technology
Stackoverflow
15,172reputation
4.8mreached
67answers
30questions
parsing
top-1%
json
top-1%
security
top-5%
post
top-5%
ajax
top-5%
python
top-5%
Github Skills (136)
prompt-engineering10
chatgpt10
ai10
json10
artificial-intelligence10
parsing10
claude10
javascript9
gemini9
relational-algebra9
gpt9
security9
python9
optimization9
post9
Programming languages (15)
Github contributions (5)
lgastako/tdf
Jan 2022 - Dec 2022
Contributions:240 commits, 1 branch in 11 months
lgastako/resume
Feb 2016 - Jun 2026
Contributions:28 pushes, 3 branches in 10 years 5 months
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