Thomas Shadwell
Member Of Technical Staff, Security at OpenAI
San Francisco, California, United States
Summary
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SeniorThomas Shadwell is a security-focused software engineer with 11 years of experience building secure systems at scale, currently a Member of Technical Staff, Security at OpenAI. He designed OpenAI’s first Secure Development Lifecycle and core authN/authZ primitives for products like ChatGPT Canvas, and has tackled AI-specific threats such as prompt injection and agentic security. Previously he led hardening and static analysis work at Google (including disclosures like CVE-2022-41034) and founded Twitch’s security team, where he architected critical auth systems and sandboxed platforms. His work at the UK NCSC helped establish a government-wide vulnerability disclosure program, reflecting a rare mix of offensive research, policy impact, and production engineering. Known for turning security research into deployable defenses, he blends deep systems knowledge with practical threat mitigation across web, cloud, and AI platforms.
11 years of coding experience
11 years of employment as a software developer
English
Github Skills (200)
interpreter10
visual-studio10
serverless10
minification10
api10
bazel10
nodejs10
amazon10
programming-language10
editor10
pulumi10
compiler10
scalable10
build-system10
exec10
Programming languages (18)
Github contributions (5)
Zemnmez/go-protobuf-marshalable-enums
Sep 2019 - Dec 2022
project to make enums (json) marshalable in go protobuf implementations
Contributions:1 PR, 3 pushes, 2 branches in 3 years 3 months
golangimplementationsprotocol-buffersprotobufgo
Zemnmez/create-react-app-z-template
Jul 2019 - Dec 2022
git repo for the template for create-react-app-z
Contributions:1 PR, 5 pushes, 2 branches in 3 years 5 months
reacttemplatecreate-reactgit-repocreate-react-app
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