Founder Directory
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Founders7
Known for these resultsRole29%Role is parsed from founder titles in yc.db. Known for 29% 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-company100%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 100% of these rows have at least one match.School57%School is matched from bios, case-sensitive for acronyms. 57% of these rows have at least one match.
- Samuel HahnFounder/COO · PetrarchS26B2B · San Francisco
- Chalmers Brown@chalmers_brownFounder/CEO · JarminF25B2B · San Francisco
- Jose Luis Perez@joseleperezFounder · TrackingplanW22B2B · Barcelona
- Valerio MagliuloFounder · AbatableS21Industrials · London
- Jonathan Baker@Jon_M_BakerFounder · AlgoViralS21B2B · London
- Martin Sosic@martinsosicFounder · WaspW21B2B · Zagreb
- David Klein@kleintechFounder · ParadeS20B2B · Seattle
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Samuel HahnPetrarchFounder/COOSummer 2026B2BSan Francisco, United States3—Chalmers BrownJarminFounder/CEOFall 2025B2BSan Francisco, United States5https://x.com/chalmers_brownJose Luis PerezTrackingplanFounderWinter 2022B2BBarcelona, Spain17https://x.com/joseleperezValerio MagliuloAbatableFounderSummer 2021IndustrialsLondon, United Kingdom35—Jonathan BakerAlgoViralFounderSummer 2021B2BLondon, United Kingdom5https://x.com/Jon_M_BakerMartin SosicWaspFounderWinter 2021B2BZagreb, Croatia2https://x.com/martinsosicDavid KleinParadeFounderSummer 2020B2BSeattle, United States5https://x.com/kleintech
Showing 1–7 of 7 founders
Shirsendu Halder
Co-Founder & Head of ML·Jarmin
PRIMARY INFO
RoleCo-Founder & Head of ML
Team size5
BatchFall 2025
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Prev: - ML/GenAI research at Apple - Research for Lockheed Martin - Research at INRIA, Universite Laval, Indian Statistical Institute - Published ML/CV papers at CVPR (best paper), ICCV, ACCV, IJCV, etc Education: - CS/Robotics at Carnegie Mellon - CS at IIT Roorkee
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
Credentialsnone mentioned
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
Jarmin
AI Employees for human-level roles
