Founder Directory
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Founders12
Known for these resultsRole42%Role is parsed from founder titles in yc.db. Known for 42% 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.Bio92%Bio coverage: 92% 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-company25%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 25% of these rows have at least one match.School50%School is matched from bios, case-sensitive for acronyms. 50% of these rows have at least one match.
- Alina Park@olenyaparkFounder/CEO · Ekho LabsS26B2B · New York
- Oleg Kostour@olegkostourFounder/CEO · AtlasGridF25B2B · San Francisco
- Alec OleskyFounder/CTO · RowFlowS25B2B · New York
- Oleg Zaremba@olzareFounder · AiSDRS23B2B · San Francisco
- Alon Hendelman@alonhendelmanFounder · OleW22Consumer · Tel Aviv
- Gal AharonFounder · OleW22Consumer · Tel Aviv
- Oleksii Sidorov@acecreamuFounder · SuggestrW22B2B · Singapore
- Oleg Giberstein@ogibersteinFounder · CoinruleS21Fintech · London
- Oleg Zaremba@olzareFounder · AXDRAFTW19B2B · Kyiv
- George BurkhardFounder/CTO · Sinovia TechnologiesW17Industrials · San Francisco
- Oleg Rogynskyy@OlegRFounder/CEO · People.aiS16B2B · San Francisco
- Oleg Kostour@olegkostourFounder · CoupleW12Consumer · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Alina ParkEkho LabsFounder/CEOSummer 2026B2BNew York, United States0https://x.com/olenyaparkOleg KostourAtlasGrid2× YCFounder/CEOFall 2025B2BSan Francisco, United States6https://x.com/olegkostourAlec OleskyRowFlowFounder/CTOSummer 2025B2BNew York, United States2—Oleg ZarembaAiSDR2× YCFounderSummer 2023B2BSan Francisco, United States5https://x.com/olzareAlon HendelmanOleFounderWinter 2022ConsumerTel Aviv, Israel10https://x.com/alonhendelmanGal AharonOleFounderWinter 2022ConsumerTel Aviv, Israel10—Oleksii SidorovSuggestrFounderWinter 2022B2BSingapore, Singapore2https://x.com/acecreamuOleg GibersteinCoinruleFounderSummer 2021FintechLondon, United Kingdom7https://x.com/ogibersteinOleg ZarembaAXDRAFT2× YCFounderWinter 2019B2BKyiv, Ukraine34https://x.com/olzareGeorge BurkhardSinovia TechnologiesFounder/CTOWinter 2017IndustrialsSan Francisco, United States7—Oleg RogynskyyPeople.aiFounder/CEOSummer 2016B2BSan Francisco, United States300https://x.com/OlegROleg KostourCouple2× YCFounderWinter 2012ConsumerSan Francisco, United States2https://x.com/olegkostour
Showing 1–12 of 12 founders
Jack Bubes
Founder/COO·RowFlow
PRIMARY INFO
RoleFounder/COO
Team size2
BatchSummer 2025
LocationNew York, United States
Company statusActive
StageEarly
BIO
Jack is the co-founder of RowFlow. He spent 8 years scaling marketplaces at Uber, Shef (YC19), and Faire (YC17), where he built 0-to-1 operational systems, standardized messy onboarding flows, and most recently led human-in-the-loop ML programs. He holds a degree in Statistics and Operations from Wharton, where he graduated in 2017.
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
COMPANY CONTEXT
RowFlowReplacing forms with AI conversations
Co-foundersAlec Olesky
