Founder Directory
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Founders2
Known for these resultsRole100%Role is parsed from founder titles in yc.db. Known for 100% 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.
- Daniel Martinez@imwi90Founder & Product · Callbook AIS26B2B · San Francisco
- Diego Avellaneda@diego_torres173Founder/CEO · Callbook AIS26B2B · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Daniel MartinezCallbook AIFounder & ProductSummer 2026B2BSan Francisco, United States7https://x.com/imwi90Diego AvellanedaCallbook AIFounder/CEOSummer 2026B2BSan Francisco, United States7https://x.com/diego_torres173
Showing 1–2 of 2 founders
Daniel Martinez
Founder & Product·Callbook AI
PRIMARY INFO
RoleFounder & Product
Team size7
BatchSummer 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
CTO at Callbook AI. CPO at Treble (YC S19). Leading B2B products for 5+ years.
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
Callbook AIAI collections agency for late stage portfolios
Co-foundersDiego Avellaneda@diego_torres173
