Founder Directory
Built by Keitoto
Founders6
Known for these resultsRole67%Role is parsed from founder titles in yc.db. Known for 67% 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-company0%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 0% of these rows have at least one match.School0%School is matched from bios, case-sensitive for acronyms. 0% of these rows have at least one match.
- João de Paula@joaopdepaulaFounder/CEO · MesmerX25B2B · Berlin
- Lucas SilvaFounder/CTO · MesmerX25B2B · Berlin
- Sergio Oliveira Bergmann@SergioOBergmannFounder · MesmerX25B2B · Berlin
- Eugenio Sánchez RabiellaFounder · MagnaPlayW23B2B
- Eugenio Sánchez RabiellaFounder/Head of Marketing · FlintoW18Fintech · Mexico City
- João de Paula@joaopdepaulaFounder/CTO · GlioS13Consumer · Rio de Janeiro
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
João de PaulaMesmer2× YCFounder/CEOSpring 2025B2BBerlin, Germany7https://x.com/joaopdepaulaLucas SilvaMesmerFounder/CTOSpring 2025B2BBerlin, Germany7—Sergio Oliveira BergmannMesmerFounderSpring 2025B2BBerlin, Germany7https://x.com/SergioOBergmannEugenio Sánchez RabiellaMagnaPlay2× YCFounderWinter 2023B2BUnknown5—Eugenio Sánchez RabiellaFlinto2× YCFounder/Head of MarketingWinter 2018FintechMexico City, Mexico0—João de PaulaGlio2× YCFounder/CTOSummer 2013ConsumerRio de Janeiro, Brazil2https://x.com/joaopdepaula
Showing 1–6 of 6 founders
Lucas Silva
Founder/CTO·Mesmer
PRIMARY INFO
RoleFounder/CTO
Team size7
BatchSpring 2025
LocationBerlin, Germany
Company statusActive
StageEarly
BIO
Cofounder and CTO at Mesmer (X25). Previously cofounder at Qual Farmácia (2018) and Director of Engineering at Origin Financial. 18 years experience as engineering leader. Passionate about building products that matter
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
MesmerThe operating system for the 100x Engineering Team
