Founder Directory
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Founders14
Known for these resultsRole43%Role is parsed from founder titles in yc.db. Known for 43% 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.Bio86%Bio coverage: 86% 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-company29%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 29% 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.
- Josephine LeeFounder · PaletteS26B2B · San Francisco
- Serena Pei@spei04Founder/CEO · PaletteS26B2B · San Francisco
- Axel La PiraFounder/CTO · PrismX26B2B · London
- Theo KitsbergFounder/CEO · PrismX26B2B · London
- Alex Liu@spicy_liuFounder/CTO · PrismX25B2B · San Francisco
- Rajit Khanna@rajitwritesFounder/CEO · PrismX25B2B · San Francisco
- Emil Soerensen@emilsnotesFounder · kapa.aiS23B2B
- Finn BauerFounder · kapa.aiS23B2B
- Ben WyrosdickFounder · EnveloopW20B2B · Birmingham
- Chris Winslett@winslettsFounder · EnveloopW20B2B · Birmingham
- Jason McCay@jasonmccayFounder · EnveloopW20B2B · Birmingham
- Maciej Lobodzinski@mlobodzinskiFounder · stoic.S19Healthcare · Kraków
- Adam Breckler@adambrecklerFounder/Problem Solver in Chief · Prism LabsS17Consumer · San Francisco
- Bradford Cross@bradfordcrossFounder/CTO · FlightcasterS09Consumer · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Josephine LeePaletteFounderSummer 2026B2BSan Francisco, United States2—Serena PeiPaletteFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/spei04Axel La PiraPrismFounder/CTOSpring 2026B2BLondon, United Kingdom4—Theo KitsbergPrismFounder/CEOSpring 2026B2BLondon, United Kingdom4—Alex LiuPrismFounder/CTOSpring 2025B2BSan Francisco, United States3https://x.com/spicy_liuRajit KhannaPrismFounder/CEOSpring 2025B2BSan Francisco, United States3https://x.com/rajitwritesEmil Soerensenkapa.aiFounderSummer 2023B2BUnknown22https://x.com/emilsnotesFinn Bauerkapa.aiFounderSummer 2023B2BUnknown22—Ben WyrosdickEnveloop2× YCFounderWinter 2020B2BBirmingham, United States5—Chris WinslettEnveloopFounderWinter 2020B2BBirmingham, United States5https://x.com/winslettsJason McCayEnveloop2× YCFounderWinter 2020B2BBirmingham, United States5https://x.com/jasonmccayMaciej Lobodzinskistoic.FounderSummer 2019HealthcareKraków, Poland9https://x.com/mlobodzinskiAdam BrecklerPrism LabsFounder/Problem Solver in ChiefSummer 2017ConsumerSan Francisco, United States5https://x.com/adambrecklerBradford CrossFlightcasterFounder/CTOSummer 2009ConsumerSan Francisco, United States2https://x.com/bradfordcross
Showing 1–14 of 14 founders
Theo Kitsberg
Founder/CEO·Prism
PRIMARY INFO
RoleFounder/CEO
Team size4
BatchSpring 2026
LocationLondon, United Kingdom
Company statusActive
StageEarly
BIO
Academic scholar at Cambridge before dropping out and published in CHI '26 for work at MIT's Media Lab and the Cambridge Computer Science Faculty. Now building Prism, where agents find and engage the best talent using our in-house, world-leading people search tool. Ran recruiting and training for a mental health helpline whilst at Cambridge.
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
