Founder Directory
Built by Keitoto
Founders22
Known for these resultsRole55%Role is parsed from founder titles in yc.db. Known for 55% 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.Bio91%Bio coverage: 91% 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-company36%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 36% of these rows have at least one match.School32%School is matched from bios, case-sensitive for acronyms. 32% of these rows have at least one match.
- Ethan Byrd@itsjustemailFounder/CEO · primitiveX26B2B · San Francisco
- BinBin He@binsquaresFounder/CEO · smol machinesX26B2B · San Francisco
- Paul Hetherington@paulcjh_Founder/CEO · HlabsW26Industrials · Austin
- Marcus Storm-Mollard@marcus1stormFounder/CEO · ClarmX25B2B
- Jules Drean@julesdreanFounder · TinfoilX25B2B · San Francisco
- Abhi Aiyer@abhiaiyerFounder/CTO · MastraW25B2B · San Francisco
- Sam Bhagwat@calcsamFounder/CEO · MastraW25B2B · San Francisco
- Shane Thomas@smthomas3Founder · MastraW25B2B · San Francisco
- Andrey SantrosyanFounder/CTO · Redouble AIS24B2B · New York
- Martin BittnerFounder/CEO · Redouble AIS24B2B · New York
- Dillon NysFounder · CelestW24B2B · San Francisco
- Anna Monaco@annarmonacoFounder/CEO · ParadigmW24B2B · San Francisco
- Ian OwnbeyFounder · PierreW23B2B · San Francisco
- Jacob Thornton@fatFounder · PierreW23B2B · San Francisco
- Nathaniel Flurry@NathanFlurryFounder · RivetW23B2B · San Francisco
- Nicholas Kissel@nicholaskisselFounder · RivetW23B2B · San Francisco
- Arun Kirubarajan@arundotaiFounder · MagnaW22Fintech · New York
- Bruno Faviero@bfavieroFounder · MagnaW22Fintech · New York
- Katerina ChatziFounder · Promakhos TherapeuticsS21Healthcare · Boston
- MacLane Wilkison@maclanewilkisonFounder/CEO · NuCypher (aka Threshold Network)S16B2B · Austin
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Ethan ByrdprimitiveFounder/CEOSpring 2026B2BSan Francisco, United States4https://x.com/itsjustemailBinBin Hesmol machinesFounder/CEOSpring 2026B2BSan Francisco, United States1https://x.com/binsquaresPaul HetheringtonHlabs2× YCFounder/CEOWinter 2026IndustrialsAustin, United States1https://x.com/paulcjh_Marcus Storm-MollardClarmFounder/CEOSpring 2025B2BUnknown2https://x.com/marcus1stormJules DreanTinfoilFounderSpring 2025B2BSan Francisco, United States5https://x.com/julesdreanAbhi AiyerMastraFounder/CTOWinter 2025B2BSan Francisco, United States30https://x.com/abhiaiyerSam BhagwatMastraFounder/CEOWinter 2025B2BSan Francisco, United States30https://x.com/calcsamShane ThomasMastraFounderWinter 2025B2BSan Francisco, United States30https://x.com/smthomas3Andrey SantrosyanRedouble AIFounder/CTOSummer 2024B2BNew York, United States3—Martin BittnerRedouble AIFounder/CEOSummer 2024B2BNew York, United States3—Dillon NysCelestFounderWinter 2024B2BSan Francisco, United States1—Anna MonacoParadigmFounder/CEOWinter 2024B2BSan Francisco, United States8https://x.com/annarmonacoIan OwnbeyPierreFounderWinter 2023B2BSan Francisco, United States10—Jacob ThorntonPierreFounderWinter 2023B2BSan Francisco, United States10https://x.com/fatNathaniel FlurryRivetFounderWinter 2023B2BSan Francisco, United States5https://x.com/NathanFlurryNicholas KisselRivetFounderWinter 2023B2BSan Francisco, United States5https://x.com/nicholaskisselArun KirubarajanMagnaFounderWinter 2022FintechNew York, United States18https://x.com/arundotaiBruno FavieroMagnaFounderWinter 2022FintechNew York, United States18https://x.com/bfavieroKaterina ChatziPromakhos TherapeuticsFounderSummer 2021HealthcareBoston, United States2—MacLane WilkisonNuCypher (aka Threshold Network)Founder/CEOSummer 2016B2BAustin, United States10https://x.com/maclanewilkison
Showing 1–20 of 22 founders
Jules Drean
Founder·Tinfoil
PRIMARY INFO
RoleFounder· not in title
Team size5
BatchSpring 2025
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Jules has an MIT PhD in secure hardware and confidential computing. He has industry experience working at Microsoft Research and NVIDIA on the technologies underlying Tinfoil. During his PhD, Jules has built secure enclaves from the ground up and studied how to attack and defend these systems against advance microarchitectural attacks. His work also looked at using trusted hardware to securely deploy advanced cryptographic primitives such as FHE and MPC.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
CredentialsPhD
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
TinfoilEncrypted AI with verifiable privacy
