Founder Directory
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Founders10
Known for these resultsRole60%Role is parsed from founder titles in yc.db. Known for 60% 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-company60%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 60% 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.
- Adam AlSayyad@adam_alsayyadFounder/CEO · CascadeW26B2B · San Francisco
- Haluk Cem DemirhanFounder/CTO · CascadeW26B2B · San Francisco
- Arlen AbrahamFounder · Cascade SpaceX25Industrials · San Francisco
- Jacob Portukalian@jportukalianFounder/CEO · Cascade SpaceX25Industrials · San Francisco
- Leopold von WaldthausenFounder/CEO · Zeit AIS24B2B · Munich
- Marvin Christopher BornsteinFounder/CTO · Zeit AIS24B2B · Munich
- Lukas HafferFounder/CEO · CascaS23Fintech · San Francisco
- Soy HwangFounder · HumanceW21Real Estate and Construction
- Sunny KimFounder · HumanceW21Real Estate and Construction
- Yon Soo ParkFounder · HumanceW21Real Estate and Construction
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Adam AlSayyadCascadeFounder/CEOWinter 2026B2BSan Francisco, United States2https://x.com/adam_alsayyadHaluk Cem DemirhanCascadeFounder/CTOWinter 2026B2BSan Francisco, United States2—Arlen AbrahamCascade SpaceFounderSpring 2025IndustrialsSan Francisco, United States7—Jacob PortukalianCascade SpaceFounder/CEOSpring 2025IndustrialsSan Francisco, United States7https://x.com/jportukalianLeopold von WaldthausenZeit AIFounder/CEOSummer 2024B2BMunich, Germany12—Marvin Christopher BornsteinZeit AIFounder/CTOSummer 2024B2BMunich, Germany12—Lukas HafferCascaFounder/CEOSummer 2023FintechSan Francisco, United States40—Soy HwangHumanceFounderWinter 2021Real Estate and ConstructionUnknown3—Sunny KimHumanceFounderWinter 2021Real Estate and ConstructionUnknown3—Yon Soo ParkHumanceFounderWinter 2021Real Estate and ConstructionUnknown3—
Showing 1–10 of 10 founders
Marvin Christopher Bornstein
Founder/CTO·Zeit AI
PRIMARY INFO
RoleFounder/CTO
Team size12
BatchSummer 2024
LocationMunich, Germany
Company statusActive
StageEarly
BIO
Grew up around Berlin, Germany and lived in London, U.K. for the last 5 years. Been writing software for over 18 years, professionally for almost 10. My focus is on full stack dev and data eng. I have researched deep learning topics and participated in numerous hackathons and InfoSec CTFs. I spent my last 5 years at Palantir in various roles across the business and have delivered value for customers in many industries (chemicals, railway infra, media, utilities, insurance, medical equipment).
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
Zeit AI
The autonomous data engineer for the mid-market
Co-foundersLeopold von Waldthausen
