Senior Software Engineer - Security/Infrastructure

San Franciscofull time

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On Site

senior

$200k–$350k

H1B: no

Afterquery Senior Software Engineer - Security/Infrastructure at AfterQuery designs and implements infrastructure to protect systems handling sensitive AI workflows. The role includes building scalable security solutions and integrating security into development workflows.

Responsibilities

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
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

Qualification

Strong programming ability in PythonExposure to AI systemsHealth Insurance401(k) with Employer Match

Required

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