Founder Directory
Built by Keitoto
Founders42
Known for these resultsRole24%Role is parsed from founder titles in yc.db. Known for 24% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio74%Bio coverage: 74% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company21%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 21% of these rows have at least one match.School26%School is matched from bios, case-sensitive for acronyms. 26% of these rows have at least one match.
- Ethan Childerhose@BigCreteFounder · SteinmetzW25Industrials · San Francisco
- Owen Brake@OwenBrakesFounder/CEO · SteinmetzW25Industrials · San Francisco
- Ari SokolovFounder · OverfluxW23B2B · Los Angeles
- Richard Zhang@richardfzhangFounder · OverfluxW23B2B · Los Angeles
- Bob CrinerFounder · Stralis AircraftW23Industrials · Brisbane
- Stuart JohnstoneFounder · Stralis AircraftW23Industrials · Brisbane
- Hugo Tarlé@hugotarleFounder · Beyond AeroW22Industrials · Toulouse
- Lin Sun FaFounder/CEO · EmobiW22B2B · San Francisco
- Eren Canarslan@ErenCanarslanXFounder · Olympian MotorsW22Industrials · New York
- Jasmine SunguFounder · Olympian MotorsW22Industrials · New York
- Ian RustFounder · RevoyW22Industrials · San Francisco
- Khushboo Shrivastava@Khushbo76511839Founder · Coulomb AIS21B2B · Bengaluru
- Santanu MondalFounder · Coulomb AIS21B2B · Bengaluru
- Ain McKendrickFounder · FactionW21Industrials · San Francisco
- Eric MaciolekFounder · H3X TechnologiesW21Industrials · Denver
- Jason SylvestreFounder · H3X TechnologiesW21Industrials · Denver
- Alexander MeekFounder · Moxion Power Co.W21Industrials · San Francisco
- Paul HuelskampFounder · Moxion Power Co.W21Industrials · San Francisco
- Billy ThalheimerFounder · REGENTW21Industrials · North Kingstown
- Michael KlinkerFounder · REGENTW21Industrials · North Kingstown
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Ethan ChilderhoseSteinmetzFounderWinter 2025IndustrialsSan Francisco, United States5https://x.com/BigCreteOwen BrakeSteinmetzFounder/CEOWinter 2025IndustrialsSan Francisco, United States5https://x.com/OwenBrakesAri SokolovOverfluxFounderWinter 2023B2BLos Angeles, United States2—Richard ZhangOverflux2× YCFounderWinter 2023B2BLos Angeles, United States2https://x.com/richardfzhangBob CrinerStralis AircraftFounderWinter 2023IndustrialsBrisbane, Australia4—Stuart JohnstoneStralis AircraftFounderWinter 2023IndustrialsBrisbane, Australia4—Hugo TarléBeyond AeroFounderWinter 2022IndustrialsToulouse, France80https://x.com/hugotarleLin Sun FaEmobiFounder/CEOWinter 2022B2BSan Francisco, United States9—Eren CanarslanOlympian MotorsFounderWinter 2022IndustrialsNew York, United States10https://x.com/ErenCanarslanXJasmine SunguOlympian MotorsFounderWinter 2022IndustrialsNew York, United States10—Ian RustRevoyFounderWinter 2022IndustrialsSan Francisco, United States4—Khushboo ShrivastavaCoulomb AIFounderSummer 2021B2BBengaluru, India10https://x.com/Khushbo76511839Santanu MondalCoulomb AIFounderSummer 2021B2BBengaluru, India10—Ain McKendrickFactionFounderWinter 2021IndustrialsSan Francisco, United States25—Eric MaciolekH3X TechnologiesFounderWinter 2021IndustrialsDenver, United States58—Jason SylvestreH3X TechnologiesFounderWinter 2021IndustrialsDenver, United States58—Alexander MeekMoxion Power Co.FounderWinter 2021IndustrialsSan Francisco, United States380—Paul HuelskampMoxion Power Co.FounderWinter 2021IndustrialsSan Francisco, United States380—Billy ThalheimerREGENTFounderWinter 2021IndustrialsNorth Kingstown, United States40—Michael KlinkerREGENTFounderWinter 2021IndustrialsNorth Kingstown, United States40—
Showing 1–20 of 42 founders
Jason Sylvestre
Founder·H3X Technologies
PRIMARY INFO
RoleFounder· not in title
Team size58
BatchWinter 2021
LocationDenver, United States
Company statusActive
StageEarly
BIO
Co-founder & CEO of H3X Technologies. Ex- Specter, Tesla, MTS. MS and BS in Electrical Engineering from University of Wisconsin-Madison. Built electric racecars in college (FSAE).
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
Credentialsnone mentioned
DisciplineEngineerKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
