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About
Jack Qiu is the founder and CEO of Ultrasonium, a materials science and advanced manufacturing company. He holds a PhD in EECS from MIT—where his research covered quantum computing, cryogenics, signal processing, hardware control, and advanced manufacturing—and a BA in Physics from UC Berkeley, and previously conducted research at Lawrence Berkeley National Laboratory, with a first-authored Nature Physics paper produced through work with MIT Lincoln Lab on IARPA and DoD programs.
CEO at UltrasoniumYC S26
Intro paths
Jack went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Diana Hu, General Partner at Y Combinator — the partner who ran Ultrasonium's batch and knows the company first-hand. YC profile ↗
In turn, Jack can intro founders to Ultrasonium's investors below.
Ultrasonium's investors · 9
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Co-founders at Ultrasonium
Frequently asked questions
- Who is Jack Qiu?
- Jack Qiu is the founder and CEO of Ultrasonium, a materials science and advanced manufacturing company. He holds a PhD in EECS from MIT—where his research covered quantum computing, cryogenics, signal processing, hardware control, and advanced manufacturing—and a BA in Physics from UC Berkeley, and previously conducted research at Lawrence Berkeley National Laboratory, with a first-authored Nature Physics paper produced through work with MIT Lincoln Lab on IARPA and DoD programs.
- Where does Jack Qiu work?
- Jack Qiu is CEO of Ultrasonium.
- What companies did Jack Qiu found?
- Jack Qiu founded Ultrasonium.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Massachusetts Institute of Technology mafia1,487
Also came through, then founded or led a company.
University of California, Berkeley mafia1,343
Also came through, then founded or led a company.
Phillips Exeter Academy mafia61
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Ultrasonium'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