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AfterQuery

Applied research lab curating data solutions for foundation model…

Y CombinatorWinter 2025ActiveB2BInfrastructureArtificial IntelligenceB2BData LabelingBig Data

What they do

Problem

Frontier AI labs need high-quality curated datasets to train and improve foundation models.

Solution

AfterQuery provides curated data solutions and applied research services to support frontier foundation model development.

Who it's for

Frontier AI labs and organizations developing large foundation models.

Founders

Carlos Georgescu
Co-Founder

Building AfterQuery. Previously interned at Citadel Securities (2x), Meta & Google as a software engineer. Past acquired ed-tech founder. Studied for a B.S. in Computer Science from the University of British Columbia.

Spencer Mateega
Co-Founder

Building AfterQuery. Previously interned in technology private equity at Silver Lake, technology investment banking at Morgan Stanley, and software engineering at Meta and Google. B.S. in Finance and Statistics at Wharton and a M.S. Computer Science at Penn.

Open roles 11

Software Engineer Intern
San Francisco, CA, US / Remote (US) · Internship · $7.5K - $10K / monthly
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Software Engineer - Applied AI / Platform
San Francisco, CA, US · Full-time · $140K - $200K
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Software Engineer - Hiring Infra (LatAM)
San Francisco, CA, US / Remote (BR; CL; MX; AR; CO; PE) · Full-time · $7K - $10K / monthly
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Strategic Projects Lead
San Francisco · Full-time · $200K - $400K
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Technical Strategic Projects Intern
San Francisco · Full-time · $90K
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Strategic Projects Associate
San Francisco · Full-time · $200K
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Strategic Projects Intern
San Francisco · Full-time · $90K - $90K
Apply ↗
Technical Strategic Projects Associate
San Francisco · Full-time · $200K
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Marketing Lead
San Francisco · Full-time · $160K - $220K
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Technical Strategic Projects Lead
San Francisco · Full-time · $200K - $400K
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Senior Software Engineer, Infrastructure & Platform
San Francisco, CA, US · Full-time · $220K - $280K
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