Founder Directory
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Founders152
Known for these resultsRole63%Role is parsed from founder titles in yc.db. Known for 63% 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.Bio94%Bio coverage: 94% 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-company33%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 33% of these rows have at least one match.School43%School is matched from bios, case-sensitive for acronyms. 43% of these rows have at least one match.
- Jamie YauFounder/CEO · CollarF26B2B · Singapore
- Kazel Koh En YangFounder/CTO · CollarF26B2B · Singapore
- David Khachaturov@davidobot_Founder/CTO · Egoist MachinesS26Consumer · San Francisco
- Erin McGurk@erinmerylstudyFounder/CEO · Egoist MachinesS26Consumer · San Francisco
- Nikos Dritsakos@nikos1Founder/CEO · GlenS26B2B · San Francisco
- Safi Shamsi@safishamsiiFounder/CEO · Graphify LabsS26B2B · London
- Karan Brar@deepmatmulFounder/CEO · hiloopS26B2B · San Francisco
- Thomas Boser@thomasboserFounder/CTO · hiloopS26B2B · San Francisco
- Karan RainaFounder/CTO · HyperProbeS26B2B · San Francisco
- Shailendra SinghFounder/CEO · HyperProbeS26B2B · San Francisco
- Luca Hadife@LucaHadifeFounder/CEO · KebraS26B2B · San Francisco
- Mohamed HosnyFounder/CTO · KebraS26B2B · San Francisco
- Niki Kotecha@KotechaNikiFounder/CTO · Lamb LabsS26B2B · London
- Thomas LanningFounder/CEO · Lamb LabsS26B2B · London
- Dorsa Rohani@dorsa_rohaniFounder · MosaicS26B2B · San Francisco
- Shubham Patil@shubhampatilsdFounder · MosaicS26B2B · San Francisco
- Lewis BlackwoodFounder/CTO · RexS26B2B · San Francisco
- Merlin Kafka@merlinkafkaFounder/CEO · RexS26B2B · San Francisco
- Louis Beaumont@louis030195Founder/CEO · screenpipeS26B2B · San Francisco
- Justin SoFounder/CEO · SidekickS26B2B · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Jamie YauCollarFounder/CEOFall 2026B2BSingapore, Singapore2—Kazel Koh En YangCollarFounder/CTOFall 2026B2BSingapore, Singapore2—David KhachaturovEgoist MachinesFounder/CTOSummer 2026ConsumerSan Francisco, United States2https://x.com/davidobot_Erin McGurkEgoist MachinesFounder/CEOSummer 2026ConsumerSan Francisco, United States2https://x.com/erinmerylstudyNikos DritsakosGlenFounder/CEOSummer 2026B2BSan Francisco, United States1https://x.com/nikos1Safi ShamsiGraphify LabsFounder/CEOSummer 2026B2BLondon, United Kingdom2https://x.com/safishamsiiKaran BrarhiloopFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/deepmatmulThomas BoserhiloopFounder/CTOSummer 2026B2BSan Francisco, United States2https://x.com/thomasboserKaran RainaHyperProbeFounder/CTOSummer 2026B2BSan Francisco, United States8—Shailendra SinghHyperProbeFounder/CEOSummer 2026B2BSan Francisco, United States8—Luca HadifeKebraFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/LucaHadifeMohamed HosnyKebraFounder/CTOSummer 2026B2BSan Francisco, United States2—Niki KotechaLamb LabsFounder/CTOSummer 2026B2BLondon, United Kingdom0https://x.com/KotechaNikiThomas LanningLamb LabsFounder/CEOSummer 2026B2BLondon, United Kingdom0—Dorsa RohaniMosaicFounderSummer 2026B2BSan Francisco, United States2https://x.com/dorsa_rohaniShubham PatilMosaicFounderSummer 2026B2BSan Francisco, United States2https://x.com/shubhampatilsdLewis BlackwoodRexFounder/CTOSummer 2026B2BSan Francisco, United States2—Merlin KafkaRexFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/merlinkafkaLouis BeaumontscreenpipeFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/louis030195Justin SoSidekickFounder/CEOSummer 2026B2BSan Francisco, United States1—
Showing 1–20 of 152 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
