Founder Directory
Built by Keitoto
Founders8
Known for these resultsRole50%Role is parsed from founder titles in yc.db. Known for 50% 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.Bio63%Bio coverage: 63% 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-company0%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 0% of these rows have at least one match.School38%School is matched from bios, case-sensitive for acronyms. 38% of these rows have at least one match.
- Cem TokerFounder/COO · NeuromorphicS26Industrials · San Francisco
- Ishan Sheth@ishansheth_Founder/CTO · ErgoW25B2B · San Francisco
- Yash Dulla@yashdullaFounder/CEO · ErgoW25B2B · San Francisco
- Lucas da Costa@thewizardlucasFounder · BrieferS23B2B · São Paulo
- Lucas Vieira@commadangleFounder · BrieferS23B2B · São Paulo
- Ritesh Malik@drriteshmalikFounder · Innov8S16Real Estate and Construction · New Delhi
- Shailesh GuptaFounder/COO · Innov8S16Real Estate and Construction · New Delhi
- Sumit RankaFounder · Innov8S16Real Estate and Construction · New Delhi
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Cem TokerNeuromorphicFounder/COOSummer 2026IndustrialsSan Francisco, United States3—Ishan ShethErgoFounder/CTOWinter 2025B2BSan Francisco, United States0https://x.com/ishansheth_Yash DullaErgoFounder/CEOWinter 2025B2BSan Francisco, United States0https://x.com/yashdullaLucas da CostaBrieferFounderSummer 2023B2BSão Paulo, Brazil2https://x.com/thewizardlucasLucas VieiraBrieferFounderSummer 2023B2BSão Paulo, Brazil2https://x.com/commadangleRitesh MalikInnov8FounderSummer 2016Real Estate and ConstructionNew Delhi, India100https://x.com/drriteshmalikShailesh GuptaInnov8Founder/COOSummer 2016Real Estate and ConstructionNew Delhi, India100—Sumit RankaInnov8FounderSummer 2016Real Estate and ConstructionNew Delhi, India100—
Showing 1–8 of 8 founders
Lucas da Costa
Founder·Briefer
PRIMARY INFO
RoleFounder· not in title
Team size2
BatchSummer 2023
LocationSão Paulo, Brazil
Company statusInactive
StageEarly
BIO
I'm the founder and CEO at Briefer. Previously, I worked as a senior software engineer at Elastic and led software engineering teams at an early-stage startup in London. I used to maintain large OSS projects like Chai.js and Sinon.js and contributed to many others, including Jest. As an author, I wrote "Testing JavaScript Applications," published by Manning. I've also spoken in more than ten countries, and my content has been voluntarily translated into more than seven languages.
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
COMPANY CONTEXT
BrieferThe collaborative data platform.
Co-foundersLucas Vieira@commadangle
