Founder Directory
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Founders199
Known for these resultsRole43%Role is parsed from founder titles in yc.db. Known for 43% 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.Bio87%Bio coverage: 87% 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-company28%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 28% 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.
- Eten Zou@etenal7Founder/CEO · Nebula SecurityS26B2B · San Francisco
- Frank Wu@FrankOverF1owFounder · Nebula SecurityS26B2B · San Francisco
- Xiaochuan Yu@Nyaaaaa_ovoFounder/CTO · Nebula SecurityS26B2B · San Francisco
- Yuan TanFounder · Nebula SecurityS26B2B · San Francisco
- Frederik VanhevelFounder/CTO · RapidfolioS26B2B · San Francisco
- Naveen QureshiFounder/CEO · RapidfolioS26B2B · San Francisco
- Christ XuFounder/CTO · RationalS26B2B · San Francisco
- Jibril Moinuddin@JibrilAsifFounder/CEO · RationalS26B2B · San Francisco
- Lewis BlackwoodFounder/CTO · RexS26B2B · San Francisco
- Merlin Kafka@merlinkafkaFounder/CEO · RexS26B2B · San Francisco
- Louis Beaumont@louis030195Founder/CEO · screenpipeS26B2B · San Francisco
- Varun WadhwaFounder/CTO · TraceforceS26B2B · San Francisco
- Xia HuaFounder/CEO · TraceforceS26B2B · San Francisco
- Lakshya Gupta@tokenawareFounder/CTO · Lab0X26B2B · San Francisco
- Onkar Borade@onkar_borade_10Founder/CEO · Lab0X26B2B · San Francisco
- Sujay Srivastava@SujaySrivFounder · Lab0X26B2B · San Francisco
- David Korn@dav1dk0rnFounder/CTO · OntoraX26B2B · San Francisco
- Leon Iwanowitsch@LeonIwanowitschFounder/CEO · OntoraX26B2B · San Francisco
- Maximilian Arnold@maxonaryFounder/COO · OntoraX26B2B · San Francisco
- Bryce Neil@BryceNeil__Founder/CEO · Visibl SemiconductorsW26B2B · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Eten ZouNebula SecurityFounder/CEOSummer 2026B2BSan Francisco, United States4https://x.com/etenal7Frank WuNebula SecurityFounderSummer 2026B2BSan Francisco, United States4https://x.com/FrankOverF1owXiaochuan YuNebula SecurityFounder/CTOSummer 2026B2BSan Francisco, United States4https://x.com/Nyaaaaa_ovoYuan TanNebula SecurityFounderSummer 2026B2BSan Francisco, United States4—Frederik VanhevelRapidfolioFounder/CTOSummer 2026B2BSan Francisco, United States——Naveen QureshiRapidfolio2× YCFounder/CEOSummer 2026B2BSan Francisco, United States——Christ XuRationalFounder/CTOSummer 2026B2BSan Francisco, United States2—Jibril MoinuddinRationalFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/JibrilAsifLewis BlackwoodRexFounder/CTOSummer 2026B2BSan Francisco, United States2—Merlin KafkaRexFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/merlinkafkaLouis BeaumontscreenpipeFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/louis030195Varun WadhwaTraceforceFounder/CTOSummer 2026B2BSan Francisco, United States2—Xia HuaTraceforceFounder/CEOSummer 2026B2BSan Francisco, United States2—Lakshya GuptaLab0Founder/CTOSpring 2026B2BSan Francisco, United States3https://x.com/tokenawareOnkar BoradeLab0Founder/CEOSpring 2026B2BSan Francisco, United States3https://x.com/onkar_borade_10Sujay SrivastavaLab0FounderSpring 2026B2BSan Francisco, United States3https://x.com/SujaySrivDavid KornOntoraFounder/CTOSpring 2026B2BSan Francisco, United States3https://x.com/dav1dk0rnLeon IwanowitschOntoraFounder/CEOSpring 2026B2BSan Francisco, United States3https://x.com/LeonIwanowitschMaximilian ArnoldOntoraFounder/COOSpring 2026B2BSan Francisco, United States3https://x.com/maxonaryBryce NeilVisibl SemiconductorsFounder/CEOWinter 2026B2BSan Francisco, United States2https://x.com/BryceNeil__
Showing 1–20 of 199 founders
Merlin Kafka
Founder/CEO·Rex
PRIMARY INFO
RoleFounder/CEO
Team size2
BatchSummer 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Merlin is the Founder and CEO of Rex, the AI partner for enterprise order-to-cash. He spent 4 years as CPO at Sequence (a16z-backed), an order-to-cash platform where he grew the company to millions in ARR and hundreds of customers. He has deep domain expertise in order to cash and accounts receivable workflows -- the exact space Rex is transforming with AI. Previously a PM at Tessian (Sequoia-backed, acquired in 2023). Studied Industrial Engineering in Cambridge and Product Design in Glasgow.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
Credentialsnone mentioned
DisciplineDesignerKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
RexAI-native BPO for enterprise order-to-cash
Co-foundersLewis Blackwood
