Founder Directory
Built by Keitoto
Founders4
Known for these resultsRole50%Role is parsed from founder titles in yc.db. Known for 50% 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.Bio100%Bio coverage: 100% 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-company75%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 75% of these rows have at least one match.School75%School is matched from bios, case-sensitive for acronyms. 75% of these rows have at least one match.
- Merlin Kafka@merlinkafkaFounder/CEO · RexS26B2B · San Francisco
- Ayantika DeyFounder/CTO · Merlin AIS24B2B · Los Angeles
- Kumar SiddharthaFounder · Merlin AIS24B2B · Los Angeles
- Sneha KumariFounder · Merlin AIS24B2B · Los Angeles
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Merlin KafkaRexFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/merlinkafkaAyantika DeyMerlin AIFounder/CTOSummer 2024B2BLos Angeles, United States19—Kumar SiddharthaMerlin AIFounderSummer 2024B2BLos Angeles, United States19—Sneha KumariMerlin AIFounderSummer 2024B2BLos Angeles, United States19—
Showing 1–4 of 4 founders
Lewis Blackwood
Founder/CTO·Rex
PRIMARY INFO
RoleFounder/CTO
Team size2
BatchSummer 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Founder and CTO at Rex, building the AI partner for enterprise order to cash. Previously: - Founding engineer at Sequence (backed by a16z) - Cofounded Personably (backed by Global Founders Capital) - Early team at GoCardless (YC S11) - Economics at Cambridge
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
RexAI-native BPO for enterprise order-to-cash
Co-foundersMerlin Kafka@merlinkafka
