Where does José Murillo work?

José Murillo is Co-CEO of Primero.

What companies has José Murillo invested in?

Investments tracked here include ARQ.

Where did José Murillo go to school?

José Murillo studied at Harvard University (Bachelor's degree, Economics, Computer Science).

José Murillo

InvestorFounder

Co-CEO at Primero

Mexico City, Mexico

FoundedPrimero

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About

José Murillo is a co-founder and co-CEO of Primero, the Mexico City company building AI infrastructure for Latin America's largest enterprises, which raised a $12 million seed in August 2026 — among the largest seed rounds ever raised in Latin America — co-led by Kaszek and General Catalyst. He studied economics and computer science at Harvard and worked at Meta and Goldman Sachs in the United States before returning to Mexico, where he had earlier been CEO of Samsam, a General Catalyst- and Neo-backed startup. He founded Primero with Andrés Rosales and Santiago Buenahora on the argument that Latin America's biggest enterprises still run on 1990s technology and need a homegrown AI champion rather than an imported one — "LatAm needs its own technology champions," as he put it at launch — and the company now serves enterprises with more than $45 billion in combined annual revenue.

Beyond investing

Founded: Co-founded Primero in Mexico City with Andrés Rosales and Santiago Buenahora, and serves as co-CEO; the company launched publicly on 25 August 2026 alongside a $12 million seed round co-led by Kaszek and General Catalyst.
Communities: Says he grew up in a family where patriotism was a value shared around the dinner table, and always intended to return to Latin America to build there.
More: Was CEO of Samsam, a startup backed by General Catalyst and Neo, before founding Primero. Studied economics and computer science at Harvard, and worked at Meta and Goldman Sachs in the United States before returning to Mexico.

Mentioned above: the Goldman Sachs mafia → · the Goldman Sachs mafia →

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Co-CEO at Primero

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In turn, José can intro founders to Primero's investors below.

Primero's investors · 5

8VCAustin · $500K – $50M checks · since 2026 ConvictionSan Francisco · $1M – $25M checks · since 2026 DefinitionNew York · since 2026 General CatalystSan Francisco · $30M checks · since 2026 Kaszek VenturesMontevideo · since 2026

Co-founders at Primero

Andrés RosalesCo-CEO

Santiago BuenahoraCTO

Experience

Primero AICo-Foundercurrent2025 — presentMexico City, Mexico
NeoAccelerator Founder2022 — 2025Bogota, D.C., Capital District, Colombia
TulStrategic Initiatives2020 — 2021Mexico City, Mexico
Goldman SachsInvestment Banking (Summer)2020New York, New York
FacebookSoftware Engineering (Summer)2019Menlo Park

Investments

Investor

ARQ

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Frequently asked questions

Who is José Murillo?: José Murillo is a co-founder and co-CEO of Primero, the Mexico City company building AI infrastructure for Latin America's largest enterprises, which raised a $12 million seed in August 2026 — among the largest seed rounds ever raised in Latin America — co-led by Kaszek and General Catalyst. He studied economics and computer science at Harvard and worked at Meta and Goldman Sachs in the United States before returning to Mexico, where he had earlier been CEO of Samsam, a General Catalyst- and Neo-backed startup. He founded Primero with Andrés Rosales and Santiago Buenahora on the argument that Latin America's biggest enterprises still run on 1990s technology and need a homegrown AI champion rather than an imported one — "LatAm needs its own technology champions," as he put it at launch — and the company now serves enterprises with more than $45 billion in combined annual revenue.
Where does José Murillo work?: José Murillo is Co-CEO of Primero.
What companies did José Murillo found?: José Murillo founded Primero.
What companies has José Murillo invested in?: Investments tracked here include ARQ.
Where did José Murillo go to school?: José Murillo studied at Harvard University (Bachelor's degree, Economics, Computer Science).