# Senior Software Engineer - Security/Infrastructure at AfterQuery

- Company: AfterQuery
- What the company does: AfterQuery captures how experts reason and turns real-world professional work into high-quality training data for frontier foundation models. Backed by Y Combinator.
- Company website: https://afterquery.com
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco
- Work setup: On-site
- Pay: $200K to $350K base salary per year (USD)
- Posted: 2026-05-26
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/afterquery/99afbbe0-5ad1-4f25-a00a-049f14428ac6
- Page: https://www.1752.vc/careers/jobs/afterquery-senior-software-engineer-security-infrastructure/

## About the role

As the Senior SWE- Security Infrastructure, you’ll be responsible for protecting a system that handles highly sensitive workflows across AI training, expert networks, and enterprise integrations with leading model labs.

## What they'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

Tags: Engineering