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San Francisco
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Still studying?Python internships in the United States open nowAbout the role
ABOUT AFTERQUERY
AfterQuery https://www.afterquery.com/ is an applied research lab curating data solutions for foundation model development. We serve every frontier AI lab with the mission of delivering the best data to power the best models. In doing so, we can make expertise that once took a lifetime to build available to anyone who needs it.
Our customers are the ones building the foundation models themselves and our work sits directly in the loop of how those systems improve. This is a rare opportunity to join a company at a defining moment in AI. Forbes reported that we could be YC's fastest unicorn, reportedly raising at a $3.2 billion valuation. We're based in San Francisco and backed by leading investors including Altos Ventures, BoxGroup, and Y Combinator and angels from Google DeepMind, OpenAI, Anthropic, Meta Superintelligence Labs, and Microsoft AI.
Also
Massive Opportunity: Forbes reported that we could be YC's fastest unicorn, reportedly raising at a $3.2 billion valuation, and we're not slowing down.
Founding Impact: You will own and architect core infrastructure systems that power our platform from the ground up.
Equity & Growth: Competitive salary and meaningful equity. As we scale, you’ll have the opportunity to shape the engineering organization and lead major technical initiatives.
Strong Team: Our founding team has experience from Citadel Securities, Meta, Google, Silver Lake, and Morgan Stanley — work alongside world-class engineers and researchers.
Also
You'll work with the world's leading AI organizations to build next-generation data solutions, managing expert teams across finance, software engineering, law, and more to deliver high-quality outputs at scale. You'll shape the dataset specifications that directly influence how frontier models are trained and evaluated, owning projects end-to-end from scoping through delivery in a fast-moving, high-stakes environment. Along the way, you'll pick up broad operational experience, moving fluidly across building, analyzing, coordinating, and executing wherever the business needs it most.
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From AfterQuery's own careers system (Ashby).
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