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AfterQueryAfterQuerySan Francisco, CA

Software Engineer - Security/Infrastructure

Build and own security infrastructure and core systems for an AI platform handling sensitive workflows. Requires 2-7 years experience with Python/Go/TypeScript, cloud environments, and production security tooling.

200k – 350k/yr
On-site2+ YOESecurity Engineering

About the role

What You’ll Work On

  • Build systems that identify and respond to real security events across our stack
  • Replace manual security workflows with programmatic, scalable solutions
  • Strengthen our cloud and production environments (GCP/AWS, containers, networking)
  • Design and enforce access control systems across internal teams, experts, and customers
  • Integrate security checks directly into development workflows without slowing shipping speed
  • Own incident handling systems and processes from detection through resolution
  • Secure surfaces unique to AI systems, including data flows and model interaction layers

Beyond Security

  • Develop human-in-the-loop systems used in AI training and evaluation
  • Contribute to core infrastructure and internal tooling used across the company
  • Ship features across the stack that directly impact customers and model performance

What We’re Looking For

  • You’ve built internal tools or systems to solve security problems—not just configured existing products
  • Strong programming ability in Python, Go, or TypeScript
  • Experience working with cloud environments (IAM, networking, containers)
  • Ability to identify vulnerabilities directly in code and system design
  • Experience creating or maintaining signal-based monitoring and alerting systems
  • Comfortable owning production issues when they arise
  • Able to move fluidly between security work and general engineering
  • 2-7 years building software or security systems

Nice to Have

  • Background in fast-scaling startups or high-output engineering teams
  • Exposure to AI systems, data pipelines, or model evaluation workflows
  • Familiarity with offensive security techniques
  • Experience building tools that other engineers depend on
  • Evidence of building and shipping systems from zero to production

Skills

PythonGoTypeScriptGCPAWSIAMNetworkingContainersAccess ControlIncident ResponseMonitoringAlerting
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