Preston Guillory
Founder at Stumpy.ai
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolPreston Guillory is a founder and full-stack engineer with 15 years of experience building high-throughput, production-grade systems from browser to database. He led Pinterest’s real-time spam-fighting platform that processed hundreds of thousands of events per second and mentored teams on unsupervised ML, then translated that scale mentality into AI-first startups like Mocha and Stumpy.ai. At Mocha he architected sandbox orchestration and a cache-aware context system enabling agentic apps to maintain coherence across thousands of messages; at Stumpy.ai he’s focused on persistent, secure AI agents that live in everyday messaging channels. Comfortable across infrastructure, orchestration, web clients, and security, he blends product-minded engineering with pragmatic cost and platform decisions. Based in San Francisco, he repeatedly ships end-to-end solutions — often rebuilding core systems to remove limits and vendor lock-in. An early tinkerer who founded cloud and platform projects dating back to 2010, he brings entrepreneurial grit alongside deep systems craftsmanship.
15 years of coding experience
23 years of employment as a software developer
BS (incomplete) Computer Science, BS (incomplete) Computer Science at Texas A&M University
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (78)
programming-language10
testing10
compiler10
lambda10
developer-tools10
scalable10
continuous-integration10
elixir10
aws-lambda10
aws10
functional-programming10
thrift9
python9
asynchronous-javascript9
serverless9
Programming languages (8)
Github contributions (5)
pguillory/elixir
Jul 2016 - May 2021
Elixir is a dynamic, functional language designed for building scalable and maintainable applications
Contributions:4 pushes, 2 branches in 4 years 10 months
functional-languagescalablegleammacrosfunctional-programming
pguillory/MinecraftAdmin
Feb 2011 - Feb 2011
Contributions:25 commits in 13 days
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