About
Andrés Rosales 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 physics and mathematics at Harvard, worked as a machine learning engineer at Dyno Therapeutics, and was an investor at 8VC — the firm co-founded by Palantir co-founder Joe Lonsdale, which went on to back Primero's seed round. He returned to Mexico City to start Primero with José Murillo and Santiago Buenahora, building forward-deployed engineering teams that embed inside Latin American enterprises.
Beyond investing
- Founded
- Co-founded Primero in Mexico City with José Murillo and Santiago Buenahora, and serves as co-CEO; the company launched publicly on 25 August 2026 with a $12 million seed round.
- More
- Was an investor at 8VC, the venture firm co-founded by Palantir co-founder Joe Lonsdale; 8VC later participated in Primero's seed round. Worked as a machine learning engineer at Dyno Therapeutics, the AI gene-therapy company, before co-founding Primero. Studied physics and mathematics at Harvard.
From Andrés's own website — common ground for a warm intro.
Co-CEO at Primero
Intro paths
In turn, Andrés can intro founders to Primero's investors below.
Primero's investors · 5
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Co-founders at Primero
Experience
- Primero AICo-Foundercurrent2025 — presentMexico City, Mexico
- 8VCInvestment Team2024 — 2025San Francisco, CA
- Dyno TherapeuticsMachine Learning Engineer2021 — 2022Cambridge, Massachusetts, United States
- Wyss Institute at Harvard UniversityResearch2021Boston, MA
Education
- Harvard UniversityBachelor of Arts - BA, Physics
- Massachusetts Institute of TechnologyCross-registration
Skills & more
Languages Arabic · English · French · Spanish
From Andrés's professional profile.
Network1
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Investors connected to Andrés in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Andrés Rosales?
- Andrés Rosales 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 physics and mathematics at Harvard, worked as a machine learning engineer at Dyno Therapeutics, and was an investor at 8VC — the firm co-founded by Palantir co-founder Joe Lonsdale, which went on to back Primero's seed round. He returned to Mexico City to start Primero with José Murillo and Santiago Buenahora, building forward-deployed engineering teams that embed inside Latin American enterprises.
- Where does Andrés Rosales work?
- Andrés Rosales is Co-CEO of Primero.
- What check size does Andrés Rosales write?
- Andrés Rosales typically writes checks of $5K – $100K.
- What companies did Andrés Rosales found?
- Andrés Rosales founded Primero.
- Where did Andrés Rosales go to school?
- Andrés Rosales studied at Harvard University (Bachelor of Arts - BA, Physics); Massachusetts Institute of Technology (Cross-registration).
Founder mafias
Massachusetts Institute of Technology mafia546
Also came through, then founded or led a company.
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8VC mafia21
Also came through, then founded or led a company.
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Same school
Also attended Harvard University1,483
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Also attended Massachusetts Institute of Technology1,296
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Shared employers
Also worked at Primero AI1
Also worked at 8VC80
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Also worked at Dyno Therapeutics4
Also worked at Wyss Institute at Harvard University23
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