Founder Directory
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Founders8
Known for these resultsRole25%Role is parsed from founder titles in yc.db. Known for 25% 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.Bio75%Bio coverage: 75% 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-company13%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 13% 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.
- Veniamin Veselovsky@VminVskyFounder · PreseenS25B2B · San Francisco
- Geoffrey Negiar@geoffnegiarFounder/CEO · The Forecasting CompanyS24B2B · Paris
- Joachim FainbergFounder/CTO · The Forecasting CompanyS24B2B · Paris
- Alex LevyFounder · AtmoW20Industrials · San Francisco
- Johan Mathe@johmatheFounder · AtmoW20Industrials · San Francisco
- Jess StilesFounder · GaiascopeS19B2B · Boston
- Lauren KuntzFounder · GaiascopeS19B2B · Boston
- Alex LevyFounder · Numerion LabsW15Healthcare · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Veniamin VeselovskyPreseenFounderSummer 2025B2BSan Francisco, United States1https://x.com/VminVskyGeoffrey NegiarThe Forecasting CompanyFounder/CEOSummer 2024B2BParis, France7https://x.com/geoffnegiarJoachim FainbergThe Forecasting CompanyFounder/CTOSummer 2024B2BParis, France7—Alex LevyAtmo2× YCFounderWinter 2020IndustrialsSan Francisco, United States10—Johan MatheAtmoFounderWinter 2020IndustrialsSan Francisco, United States10https://x.com/johmatheJess StilesGaiascopeFounderSummer 2019B2BBoston, United States9—Lauren KuntzGaiascopeFounderSummer 2019B2BBoston, United States9—Alex LevyNumerion Labs2× YCFounderWinter 2015HealthcareSan Francisco, United States67—
Showing 1–8 of 8 founders
Johan Mathe
Founder·Atmo
PRIMARY INFO
RoleFounder· not in title
Team size10
BatchWinter 2020
LocationSan Francisco, United States
Company statusActive
StageGrowth
BIO
As co-founder and CTO of Atmo, Johan spearheads groundbreaking advancements in climate and weather science, leveraging AI, applied mathematics, and distributed systems. His lifelong mission is to bring applied mathematics and AI to the physical sciences. His expertise is backed by an 8-year tenure at Google, including Google X's Project Loon, where he lead critical efforts in the planning and simulation, and as a founding team member of Caption Health (acq. 2023) and Apollo Fusion (IPO 2021).
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
First YC company on record
