Founder Directory
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Founders21
Known for these resultsRole29%Role is parsed from founder titles in yc.db. Known for 29% 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.Bio90%Bio coverage: 90% 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-company14%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 14% of these rows have at least one match.School24%School is matched from bios, case-sensitive for acronyms. 24% of these rows have at least one match.
- Eunju MoonFounder/CTO · InstinctW26Fintech · San Francisco
- Joon Won Song@mericsongFounder/CEO · InstinctW26Fintech · San Francisco
- Dale Wilson@0xdwilFounder/CTO · KarsaW25Fintech · New York
- Shahryar Hasnani@0xLilShahFounder/CEO · KarsaW25Fintech · New York
- Alejandro Rettig@AleRettigFounder · InfiniaW23Fintech · Montevideo
- Ianai UrwiczFounder · InfiniaW23Fintech · Montevideo
- David Fiala@davidjfialaFounder · KV CashW23B2B · San Francisco
- Adit PatelFounder · BlockscopeS22B2B · New York
- Maharshi PatelFounder · BlockscopeS22B2B · New York
- Akhil Reddy@akhilred_Founder/CEO · TheraS22B2B · New York
- MJ KimFounder · AYC FundW22Fintech · Seoul
- Alexander Carlson@xanderscarlsonFounder · DecentW22B2B · New York
- Charlie Durbin@cdsirenFounder · DecentW22B2B · New York
- Will Collier@wdcollier_Founder · DecentW22B2B · New York
- Will Kantaros@willkantarosFounder · DecentW22B2B · New York
- Adam Zvada@adamzvadaFounder · NFTScoringW22Consumer · New York
- David Mokos@davidmokos_Founder · NFTScoringW22Consumer · New York
- Billy Caballero@Billy_CaballeroFounder · HapiW21Fintech · San Francisco
- Dusko Kelez@duskokelezFounder · HapiW21Fintech · San Francisco
- Piero Sifuentes@pierosifuentespFounder · HapiW21Fintech · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Eunju MoonInstinctFounder/CTOWinter 2026FintechSan Francisco, United States5—Joon Won SongInstinctFounder/CEOWinter 2026FintechSan Francisco, United States5https://x.com/mericsongDale WilsonKarsaFounder/CTOWinter 2025FintechNew York, United States2https://x.com/0xdwilShahryar HasnaniKarsaFounder/CEOWinter 2025FintechNew York, United States2https://x.com/0xLilShahAlejandro RettigInfiniaFounderWinter 2023FintechMontevideo, Uruguay12https://x.com/AleRettigIanai UrwiczInfiniaFounderWinter 2023FintechMontevideo, Uruguay12—David FialaKV CashFounderWinter 2023B2BSan Francisco, United States—https://x.com/davidjfialaAdit PatelBlockscopeFounderSummer 2022B2BNew York, United States4—Maharshi PatelBlockscopeFounderSummer 2022B2BNew York, United States4—Akhil ReddyTheraFounder/CEOSummer 2022B2BNew York, United States15https://x.com/akhilred_MJ KimAYC FundFounderWinter 2022FintechSeoul, South Korea1—Alexander CarlsonDecentFounderWinter 2022B2BNew York, United States6https://x.com/xanderscarlsonCharlie DurbinDecentFounderWinter 2022B2BNew York, United States6https://x.com/cdsirenWill CollierDecentFounderWinter 2022B2BNew York, United States6https://x.com/wdcollier_Will KantarosDecentFounderWinter 2022B2BNew York, United States6https://x.com/willkantarosAdam ZvadaNFTScoringFounderWinter 2022ConsumerNew York, United States8https://x.com/adamzvadaDavid MokosNFTScoringFounderWinter 2022ConsumerNew York, United States8https://x.com/davidmokos_Billy CaballeroHapiFounderWinter 2021FintechSan Francisco, United States45https://x.com/Billy_CaballeroDusko KelezHapiFounderWinter 2021FintechSan Francisco, United States45https://x.com/duskokelezPiero SifuentesHapiFounderWinter 2021FintechSan Francisco, United States45https://x.com/pierosifuentesp
Showing 1–20 of 21 founders
Billy Caballero
Founder·Hapi
PRIMARY INFO
RoleFounder· not in title
Team size45
BatchWinter 2021
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Co-Founder & CTO at Hapi
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
No notable employer or school mentioned in the bio.
Credentialsnone mentioned
DisciplineEngineerKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
Hapi
Stocks and cryptos trading app with zero commissions and no minimums…
