Founder Directory
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Founders2
Known for these resultsRole0%Role is parsed from founder titles in yc.db. Known for 0% 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-company0%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 0% of these rows have at least one match.School0%School is matched from bios, case-sensitive for acronyms. 0% of these rows have at least one match.
- Alistair Pullen@AlistairPullenFounder · CosineW23B2B · London
- Yang Li@yangli_Founder · CosineW23B2B · London
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Alistair PullenCosineFounderWinter 2023B2BLondon, United Kingdom12https://x.com/AlistairPullenYang LiCosineFounderWinter 2023B2BLondon, United Kingdom12https://x.com/yangli_
Showing 1–2 of 2 founders
Alistair Pullen
Founder·Cosine
PRIMARY INFO
RoleFounder· not in title
Team size12
BatchWinter 2023
LocationLondon, United Kingdom
Company statusActive
StageEarly
BIO
Full-stack Software Engineer with 15 years experience with deep applied knowledge of LLMs and Embeddings. Currently building an AI dev tool. Experienced an exit with Fancy (YC S20, acq. GoPuff).
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
Cosine
Fully Agentic SWE
Co-foundersYang Li@yangli_
