Matthew Groll
FounderCTO at Mass Magnetics
San Francisco, California, United States
FoundedMass Magnetics · YC
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About
Co-founder and CTO of Mass Magnetics who previously worked on thermal systems and guidance/navigation at NASA Johnson Space Center supporting ISS and Artemis lunar missions, and served as a Member of Technical Staff at Draper Laboratory. He studied Mechanical Engineering at Columbia, where he captained the Formula SAE team and Robotics Club, and holds a Master's in Manufacturing from MIT.
CTO at Mass MagneticsYC S26
Intro paths
Matthew 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 Vivian Midha Shen, Founder at Acely — the partner who ran Mass Magnetics's batch and knows the company first-hand.
In turn, Matthew can intro founders to Mass Magnetics's investors below.
Mass Magnetics's investors · 17
Co-founders at Mass Magnetics

Frequently asked questions
- Who is Matthew Groll?
- Co-founder and CTO of Mass Magnetics who previously worked on thermal systems and guidance/navigation at NASA Johnson Space Center supporting ISS and Artemis lunar missions, and served as a Member of Technical Staff at Draper Laboratory. He studied Mechanical Engineering at Columbia, where he captained the Formula SAE team and Robotics Club, and holds a Master's in Manufacturing from MIT.
- Where does Matthew Groll work?
- Matthew Groll is CTO of Mass Magnetics.
- What companies did Matthew Groll found?
- Matthew Groll founded Mass Magnetics.
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.
Columbia University mafia602
Also came through, then founded or led a company.
Western Reserve Academy mafia6
Also came through, then founded or led a company.
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