Senior Security Infra Engineer for AI Platform

afterquery.com; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Health Insurance: Medical, Vision, and

401(k) with Employer Match

Daily Meals: Daily UberEats Stipend

Monthly Wellness Stipend

Job summary

AfterQuery in San Francisco is seeking a Senior SWE- Security Infrastructure to protect a high-sensitivity AI data platform. You will design and implement resilient infrastructure, embed security into development workflows, and replace repetitive tasks with code using AI-assisted tooling.

You'll own security across cloud environments (GCP/AWS), containers, and data pipelines, while collaborating with researchers and engineers to push frontier AI, model evaluation, and enterprise integrations in

Qualifications

• 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 and moving between security work and general engineering.
• 2–7 years building software or security systems.

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

Skills

Python

Go

TypeScript

Cloud environments

Vulnerability assessment

Monitoring & alerting

Incident management

Cross-disciplinary

Security tooling

Tools

AWS

GCP

Kubernetes

Job description

AfterQuery in San Francisco is seeking a Senior SWE- Security Infrastructure to protect a high-sensitivity AI data platform. You will design and implement resilient infrastructure, embed security into development workflows, and replace repetitive tasks with code using AI-assisted tooling.

You'll own security across cloud environments (GCP/AWS), containers, and data pipelines, while collaborating with researchers and engineers to push frontier AI, model evaluation, and enterprise integrations in