Alex Mac
FounderFounder at truthsystems
San Francisco, California, United States
Foundedtruthsystems · YC
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About
Alex Mac previously served as AI Research Lead at Stanford Law, where the work centered on agentic compliance systems. Mac has published research on graph neural networks and has experience in natural language processing, including NAACL publications with UCLA NLP, and has held academic roles including a lectureship at the University of Warsaw.
Founder at truthsystemsYC S25
Intro paths
Alex went through Y Combinator (Summer 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Jon Xu, General Partner at Y Combinator — the partner who ran truthsystems's batch and knows the company first-hand. YC profile ↗
In turn, Alex can intro founders to truthsystems's investors below.
truthsystems's investors · 4
Co-founders at truthsystems

Experience
- Truth SystemsCo-founder and CEOcurrent2023 — presentSan Francisco Bay Area
- Stanford Law SchoolResearch2024 — 2025Stanford, California, United States
- UCLA Computer ScienceResearch2022 — 2024Los Angeles, California, United States
- University of WarsawResearch2019 — 2022Warsaw, Mazowieckie, Poland
- Viettel Cyberspace CenterResearch2021Hanoi, Hanoi, Vietnam
Skills & more
+3 more
Deep LearningUnsupervised LearningResearchFrom Alex's professional profile.
Frequently asked questions
- Who is Alex Mac?
- Alex Mac previously served as AI Research Lead at Stanford Law, where the work centered on agentic compliance systems. Mac has published research on graph neural networks and has experience in natural language processing, including NAACL publications with UCLA NLP, and has held academic roles including a lectureship at the University of Warsaw.
- Where does Alex Mac work?
- Alex Mac is Founder of truthsystems.
- What companies did Alex Mac found?
- Alex Mac founded truthsystems.
- Where did Alex Mac go to school?
- Alex Mac studied at Y Combinator (S25); UCLA (Bachelor of Science - BS, Computer Science).
Founder mafias
Y Combinator mafia10,563
Also came through, then founded or led a company.
UCLA mafia451
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended UCLA1,016
+ 1,010 more
Shared employers
Also worked at Stanford Law School21
+ 15 more
Also worked at University of Warsaw8
+ 2 more



































