About
Sebastian Fischer is cofounder and CEO of Wardstone, a space defense company. He brings over a decade of engineering and product experience from roles at Amazon Prime Air, Cruise Self-Driving, Lockheed Martin, and NASA on planetary spacecraft, with an aerospace engineering degree from MIT and dual MS/MBA from Harvard.
Founder and CEO at WardstoneYC F25
Intro paths
YC
Sebastian went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
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Their group partner at YC was Garry Tan, President & CEO of Y Combinator — the partner who ran Wardstone's batch and knows the company first-hand. YC profile ↗
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In turn, Sebastian can intro founders to Wardstone's investors below.
Wardstone's investors · 1
Co-founders at Wardstone
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Tobias FischerFounder