Founder Directory
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Founders46
Known for these resultsRole46%Role is parsed from founder titles in yc.db. Known for 46% 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.Bio67%Bio coverage: 67% 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-company9%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 9% of these rows have at least one match.School37%School is matched from bios, case-sensitive for acronyms. 37% of these rows have at least one match.
- Justin TangFounder/CTO · Lantern AIF26B2B · San Francisco
- Thomas ChanFounder/CEO · Lantern AIF26B2B · San Francisco
- Alex YeeFounder/CTO · GrocaloS26Consumer · Los Angeles
- David HwangFounder/CEO · GrocaloS26Consumer · Los Angeles
- Sherwood Callaway@shcallawayFounder/CEO · SazabiX26B2B · San Francisco
- Adish Jain@_adishjFounder/CEO · MosaicW25Consumer · San Francisco
- Kyle Wade@superfx64Founder/CTO · MosaicW25Consumer · San Francisco
- Sandra LifshitsFounder/CEO · RetrofitW25Consumer · New York
- Filip Kozera@kozerafilipFounder/CEO · WordwareS24Consumer · San Francisco
- Robert Chandler@bertie_aiFounder/CTO · WordwareS24Consumer · San Francisco
- Daniel WolfFounder · Carousel TechnologiesW24B2B · New York
- Jude RizzoFounder · Carousel TechnologiesW24B2B · New York
- Kunal Puri@thekunalpuriFounder · SmobiS23B2B · New York
- Clemens Rawert@rawertFounder · LangfuseW23B2B · Berlin
- Deepit Patil@deepit_patilFounder · CrazeS22Consumer · Mumbai
- Kabir Nagral@kabirnagralFounder · CrazeS22Consumer · Mumbai
- Avhijeet KapoorFounder · Brown FoodsW22Healthcare · Boston
- Bhavna TandonFounder · Brown FoodsW22Healthcare · Boston
- Sohail GuptaFounder · Brown FoodsW22Healthcare · Boston
- Saif Khawaja@khawajasnFounder · Shinkei SystemsW22Industrials · Los Angeles
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Justin TangLantern AIFounder/CTOFall 2026B2BSan Francisco, United States4—Thomas ChanLantern AIFounder/CEOFall 2026B2BSan Francisco, United States4—Alex YeeGrocaloFounder/CTOSummer 2026ConsumerLos Angeles, United States0—David HwangGrocaloFounder/CEOSummer 2026ConsumerLos Angeles, United States0—Sherwood CallawaySazabi2× YCFounder/CEOSpring 2026B2BSan Francisco, United States10https://x.com/shcallawayAdish JainMosaicFounder/CEOWinter 2025ConsumerSan Francisco, United States5https://x.com/_adishjKyle WadeMosaicFounder/CTOWinter 2025ConsumerSan Francisco, United States5https://x.com/superfx64Sandra LifshitsRetrofitFounder/CEOWinter 2025ConsumerNew York, United States2—Filip KozeraWordwareFounder/CEOSummer 2024ConsumerSan Francisco, United States15https://x.com/kozerafilipRobert ChandlerWordwareFounder/CTOSummer 2024ConsumerSan Francisco, United States15https://x.com/bertie_aiDaniel WolfCarousel TechnologiesFounderWinter 2024B2BNew York, United States4—Jude RizzoCarousel TechnologiesFounderWinter 2024B2BNew York, United States4—Kunal PuriSmobiFounderSummer 2023B2BNew York, United States4https://x.com/thekunalpuriClemens RawertLangfuseFounderWinter 2023B2BBerlin, Germany19https://x.com/rawertDeepit PatilCrazeFounderSummer 2022ConsumerMumbai, India8https://x.com/deepit_patilKabir NagralCrazeFounderSummer 2022ConsumerMumbai, India8https://x.com/kabirnagralAvhijeet KapoorBrown FoodsFounderWinter 2022HealthcareBoston, United States5—Bhavna TandonBrown FoodsFounderWinter 2022HealthcareBoston, United States5—Sohail GuptaBrown FoodsFounderWinter 2022HealthcareBoston, United States5—Saif KhawajaShinkei SystemsFounderWinter 2022IndustrialsLos Angeles, United States80https://x.com/khawajasn
Showing 1–20 of 46 founders
Clemens Rawert
Founder·Langfuse
PRIMARY INFO
RoleFounder· not in title
Team size19
BatchWinter 2023
LocationBerlin, Germany
Company statusAcquired
StageEarly
BIO
Before starting Langfuse, Clemens worked with the founder-CEOs of German Fintech Unicorn Scalable Capital including a unicorn fundraising, an acquisition and helped scale the org and team from 100 - 400 employees. On another note, he studied Economic History, dropped out of a PhD at Oxford, and was a competitive wine taster.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
CredentialsPhDDropout / Thiel
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
LangfuseOpen source LLM engineering platform
