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.School100%School is matched from bios, case-sensitive for acronyms. 100% of these rows have at least one match.
- Rohan VijFounder/CTO · ReasonBlocksX26B2B · San Francisco
- Sajeev MageshFounder/CEO · ReasonBlocksX26B2B · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Rohan VijReasonBlocksFounder/CTOSpring 2026B2BSan Francisco, United States2—Sajeev MageshReasonBlocksFounder/CEOSpring 2026B2BSan Francisco, United States2—
Showing 1–2 of 2 founders
Sajeev Magesh
Founder/CEO·ReasonBlocks
PRIMARY INFO
RoleFounder/CEO
Team size2
BatchSpring 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Formerly at Stanford CS. Published in Nature Sustainable Agriculture (ML × agriculture). UN Best Paper. USAMO qualifier. 11 years building with co-founder Rohan. Currently making AI agents smarter and more reliable @ ReasonBlocks
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
ReasonBlocksThe runtime layer that makes AI agents cheaper and more reliable
Co-foundersRohan Vij
