AfterQuery - Security Engineer

deCircle•San Francisco, CA
•$200,000 - $350,000•Onsite

About The Position

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. 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.

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

Responsibilities

  • 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

Benefits

  • $200K-$350K base (depends on experience) + $250K-$500K (4-year vesting) equity
  • Open to visa transfers (e.g. OPT, H1B transfers)
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