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AfterQuery - Security Engineer

  • On-site
    • San Francisco, California, United States
  • $200,000 - $350,000 per year

Job description

Pushes the frontier of LLMs and AI agents through novel datasets and experimentation; builds infrastructure powering frontier data creation for agentic and hard-reasoning workflows for leading AI labs and YC companies.

Comp: $200K-$350K base (depends on experience) + $250K-$500K (4-year vesting) equity. Visa: Open to visa transfers (e.g. OPT, H1B transfers). Policy: On-site, 5 days in-office in San Francisco.

Own and build AfterQuery's security posture from the ground up while contributing to core infrastructure; protect highly sensitive AI training data and workflows across integrations with leading model labs. Founding-level role.

What you'll do

  • Design and implement security infrastructure across cloud/production (GCP/AWS); build the 30/60/90 day plan from scratch

  • Build programmatic, scalable solutions replacing manual security workflows, incl. incident detection, response and resolution

  • Secure sensitive data flows and model interaction layers unique to AI systems

  • Contribute to core infrastructure and horizontal platform work when not on security

  • Integrate security checks into dev workflows without slowing shipping

Tech stack: Python, Go, TypeScript, GCP, AWS, Docker/Containers

Job requirements

  • 4-12 yrs security + infrastructure engineering

  • Deeply technical: has built security systems, not just configured off-the-shelf tools

  • Comfortable moving between security work and general engineering

  • On-site 5 days SF

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