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.School50%School is matched from bios, case-sensitive for acronyms. 50% of these rows have at least one match.
- Jeff Mao@JeffMao_Founder/CEO · SellRazeF25Consumer · San Francisco
- Tyler Ma@tylerma_Founder/CTO · SellRazeF25Consumer · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Jeff MaoSellRazeFounder/CEOFall 2025ConsumerSan Francisco, United States6https://x.com/JeffMao_Tyler MaSellRazeFounder/CTOFall 2025ConsumerSan Francisco, United States6https://x.com/tylerma_
Showing 1–2 of 2 founders
Jeff Mao
Founder/CEO·SellRaze
PRIMARY INFO
RoleFounder/CEO
Team size6
BatchFall 2025
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
I'm Jeff, co-founder and CEO of SellRaze. In high school I was a sneaker reseller. Instead of paying attention in math class, I was building custom software to snag Jordan releases. During COVID, I reverse engineered Amazon's anti-bot system and sold it to scalpers... which crashed the supply chain for 30 series graphics cards, PS5s, and Xbox X's. Now I help people buy and sell online :)
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
Exit mentioned in bio
COMPANY CONTEXT
SellRazeThe fastest way to sell online.
Co-foundersTyler Ma@tylerma_
