About
Co-founder and Chief Research Officer of Ultrasonium, a materials science and advanced manufacturing company. He previously founded the DOE-funded nuclear startup Bay State Energy, invented the Nuclear Thermoelectric Generator, studied physics at Boston University, and was the first hire at Phase3D, where he developed and commercialized metals manufacturing technology.
Co-Founder at UltrasoniumYC S26
Intro paths
YC
Alexander went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
GP
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 ↗
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In turn, Alexander can intro founders to Ultrasonium's investors below.
Ultrasonium's investors · 1
Co-founders at Ultrasonium
Frequently asked questions
- Who is Alexander Urbanski?
- Co-founder and Chief Research Officer of Ultrasonium, a materials science and advanced manufacturing company. He previously founded the DOE-funded nuclear startup Bay State Energy, invented the Nuclear Thermoelectric Generator, studied physics at Boston University, and was the first hire at Phase3D, where he developed and commercialized metals manufacturing technology.
- Where does Alexander Urbanski work?
- Alexander Urbanski is Co-Founder of Ultrasonium.
- What companies did Alexander Urbanski found?
- Alexander Urbanski founded Ultrasonium.