Founder Directory
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Founders7
Known for these resultsRole57%Role is parsed from founder titles in yc.db. Known for 57% 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-company71%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 71% of these rows have at least one match.School14%School is matched from bios, case-sensitive for acronyms. 14% of these rows have at least one match.
- Michael Lemm@mikeslemmFounder/COO · AndcoX26B2B · San Francisco
- Ryan XueFounder/CEO · AndcoX26B2B · San Francisco
- Badal JainFounder · LayupW23B2B · New York
- Michael Lemm@mikeslemmFounder · LayupW23B2B · New York
- Ryan XueFounder/CEO · LayupW23B2B · New York
- Justin KoFounder · OpkitS21Healthcare · New York
- Sherwood Callaway@shcallawayFounder/CEO · OpkitS21Healthcare · New York
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Michael LemmAndco2× YCFounder/COOSpring 2026B2BSan Francisco, United States3https://x.com/mikeslemmRyan XueAndco2× YCFounder/CEOSpring 2026B2BSan Francisco, United States3—Badal JainLayupFounderWinter 2023B2BNew York, United States3—Michael LemmLayup2× YCFounderWinter 2023B2BNew York, United States3https://x.com/mikeslemmRyan XueLayup2× YCFounder/CEOWinter 2023B2BNew York, United States3—Justin KoOpkitFounderSummer 2021HealthcareNew York, United States——Sherwood CallawayOpkit2× YCFounder/CEOSummer 2021HealthcareNew York, United States—https://x.com/shcallaway
Showing 1–7 of 7 founders
Sherwood Callaway
Founder/CEO·Opkit
PRIMARY INFO
RoleFounder/CEO
Team size—
BatchSummer 2021
LocationNew York, United States
Company statusInactive
StageEarly
BIO
Sherwood Callaway is a 2x YC founder and software engineer with over ten years of experience in infrastructure, DevOps, and observability engineering roles top VC-backed startups, including Crunchbase and Brex. Currently, he is founder and CEO at Sazabi, the AI-native observability platform for fast-moving engineering teams. Sazabi is directly inspired by Sherwood's experience at Brex, where helped start the company's infrastructure and observability engineering teams.
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
2× YC founder
- S21OpkitInactive · this entry
- X26SazabiActive
