- Total raised
- $30.5M
- Stage
- Series A
- Last round
- Series A · Apr 2026
- Team size
- 51-200
- Founded
- 2025
- HQ
- San Francisco
About AfterQuery
AfterQuery builds datasets and experimentation to advance frontier LLM and AI-agent workflows, constructing complex data-infrastructure for agentic and hard-reasoning tasks. It partners with five AI labs and is YC's infrastructure partner, led by teams from top banks and quant firms.
Open roles · 8
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Marketing Lead
San Francisco · on-site · $160k–220k
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RL Environment Engineer
Los Angeles · on-site · $200k
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Software Engineer - RL Environments
San Francisco · on-site · $180k–220k
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SWE (LATM)
San Francisco · remote
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LATAM - Software Engineer
San Francisco · remote
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LATAM Software Engineer
San Francisco · remote
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Research Scientist
Los Angeles · on-site · $110k–150k
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Member of Talent Staff
San Francisco · on-site · $80k–110k
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