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About
Zac Policzer previously worked on software systems serving over a billion users with expertise in large-scale databases. He is now developing high-performance computing clusters at Zibra Labs, with recent focus on AI data center infrastructure and open source contributions.
CTO at Zibra LabsYC X26
Intro paths
Zac went through Y Combinator (Spring 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Tom Blomfield, Monzo and GoCardless co-founder; Y Combinator partner on leave and Anthropic compute-team member. — the partner who ran Zibra Labs's batch and knows the company first-hand. YC profile ↗
In turn, Zac can intro founders to Zibra Labs's investors below.
Zibra Labs's investors · 7
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Co-founders at Zibra Labs
Frequently asked questions
- Who is Zac Policzer?
- Zac Policzer previously worked on software systems serving over a billion users with expertise in large-scale databases. He is now developing high-performance computing clusters at Zibra Labs, with recent focus on AI data center infrastructure and open source contributions.
- Where does Zac Policzer work?
- Zac Policzer is CTO of Zibra Labs.
- What companies did Zac Policzer found?
- Zac Policzer founded Zibra Labs.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
UCLA mafia463
Also came through, then founded or led a company.
LinkedIn mafia195
Also came through, then founded or led a company.
Anyscale mafia4
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Zibra Labs's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights