Michael D'Angelo builds AI security at OpenAI. Previously, he co-founded Promptfoo and served as CTO, developing open-source evaluation and red-teaming tools before the company joined OpenAI in 2026.
Michael D'Angelo builds AI security at OpenAI. Previously, he co-founded Promptfoo and served as CTO, developing open-source evaluation and red-teaming tools before the company joined OpenAI in 2026.
Career
Michael D'Angelo holds an MS in Computational and Mathematical Engineering from Stanford University and a BS in Electrical Engineering and Computer Engineering from University at Buffalo.
Member of Technical Staff at OpenAI from 2026-03 to PresentWorks on Promptfoo and Codex Security at OpenAI.SICo-founder at Skeptical Investments from 2017-04 to Present
Co-founder and CTO at PromptFoo from 2024-07 to 2026-03Co-founded Promptfoo and served as CTO, building open-source security, red-teaming, and evaluation tools for AI applications.SIVP Engineering & Head of AI at Smile ID from 2022-01 to 2024-07
ACo-founder & CTO at Arthena from 2014-01 to 2022-01
MCo-founder at Matroid from 2015-09 to 2016-06
Avionics Intern at Planet from 2014-06 to 2015-01PRAvionics Intern at Planetary Resources from 2014-01 to 2014-05
FSoftware Engineering Intern at Facebook from 2013-06 to 2013-09
UNProgram Manager at UB Nanosatellite Program from 2011-06 to 2012-05