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Open nowPosted 2 days ago

AfterQuery - Security Engineer

deCircle253 open roles

Pay
$200,000 – $350,000 a year
Where
San Francisco, California, United States
Work mode
On site
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Your applicationOpen nowAfterQuery - Security EngineerdeCircle · San Francisco, California, United States

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  2. 3.9%3 days
  3. 9.8%7 days
  4. 15.6%14 days
  5. 33.8%30 days
This job: posted 2 days ago

The posting

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

  • 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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