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Rafa Pereira

Unicorn founder

Founder at Onebrief

Lisbon, Lisbon, Portugal

FoundedOnebrief$2.1B · YC

Find your path to Rafa

1,569 people in our graph share verified history with Rafa — schools, employers, funds. One of them is your warm intro.

Paul KwanunlockedRafa: together at Y Combinator (2021)
×10Rafa: together at Y Combinator
Rafa: together at IAC Applications

About

Rafa Pereira has held engineering and product leadership roles at data.world and IAC, and holds BS and MBA degrees. He began software development as a teenager and has continued building products since 1999.

Founder at OnebriefYC S21

Intro paths

YC

Rafa went through Y Combinator (Summer 2021) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Brad Flora, Backing expeditions into the future — the partner who ran Onebrief's batch and knows the company first-hand. YC profile ↗

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In turn, Rafa can intro founders to Onebrief's investors below.

Onebrief's investors · 18

9Yards CapitalNew York · $100K – $10M checks · since 2025Alchemist AcceleratorSan Francisco · $30K checksAnorak VenturesLos Angeles · $25K – $400K checksBattery VenturesBoston · $500K – $100M checks · since 2026Caffeinated CapitalSan Francisco · $3M – $50M checks · since 2026General CatalystSan Francisco · $30M checks · since 2024Human CapitalSan Francisco · $250K – $200M checks · since 2025Insight PartnersNew York · $120M – $350M checks · since 2026Kyber Knight CapitalSan FranciscoPROOFArlingtonSalesforce VenturesSan Francisco · $5M – $50M checks · since 2026Sapphire VenturesMenlo Park · $5M – $20M checks · since 2026Signia Venture PartnersMenlo Park · $500K – $2M checksSummit Peak InvestmentsFort WorthU.S. Air Forcesince 2019U.S. Navysince 2023Visary CapitalSyossetY CombinatorSan Francisco · $500K checks · since 2021

Co-founders at Onebrief

GDGrant Demaree
Grant DemareeFounder

Experience

  1. OnebriefCo-Founder (Retired)current2019 — presentAustin, Texas, United States
  2. OnebriefHead of Product2024 — 2025Austin, Texas, United States
  3. OnebriefChief Technology Officer2019 — 2023Austin, Texas, United States
  4. Capital FactoryMentor2017 — 2021Austin, Texas Metropolitan Area
  5. data.worldDirector of Software Engineering2016 — 2019Austin, Texas Metropolitan Area
  6. IAC ApplicationsVP, Software Engineering2013 — 2016New York City Metropolitan Area
  7. IAC ApplicationsDirector, Software Engineering2010 — 2013New York City Metropolitan Area
  8. Bunge Global AgribusinessEnterprise Architect2006 — 2010New York City Metropolitan Area
  9. Stefanini U.S.Enterprise Architect2006 — 2010New York City Metropolitan Area
  10. Stefanini U.S.Software Architect2004 — 2006Brazil
  11. XimpCo-founder / Instructor2004 — 2006Brazil
  12. Algar TelecomJava Developer2001 — 2004Brazil

Skills & more

Product ManagementProduct DesignStrategic LeadershipEntrepreneurship4Enterprise Architecture6Large Scale SystemsSOA54OOPWeb Development15Integration44MOMWeb Services9
+12 moreApplication ServersTIBCOAgile Project ManagementRUPExtreme ProgrammingScrumAnalyticsMobile ApplicationsUMLJ2EEJavaHTML

Languages Portuguese · Spanish

From Rafa's professional profile.

Frequently asked questions

Who is Rafa Pereira?
Rafa Pereira has held engineering and product leadership roles at data.world and IAC, and holds BS and MBA degrees. He began software development as a teenager and has continued building products since 1999.
Where does Rafa Pereira work?
Rafa Pereira is Founder of Onebrief.
What companies did Rafa Pereira found?
Rafa Pereira founded Onebrief.
Where did Rafa Pereira go to school?
Rafa Pereira studied at Baruch College (MBA, Entrepreneurship); Universidade Federal de Minas Gerais (MS (Incomplete), Computer Science); Universidade Federal de Uberlândia - UFU (BS, Computer Science).

Founder mafias

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Shared employers