Senior Software Engineer 5 — Validation & Safety Platform

We are looking for a Senior Software Engineer to help build the next generation of this platform: tools and guardrails that keep pace with an engineering org where a growing share of code is agent-generated.

You will design systems that thousands of engineers and their agents depend on, make build-vs-extend calls on what the platform should own versus expose through an API, and bring a security-conscious view to how autonomous agents get sandboxed, scoped, and safely given access to test infrastructure.

The Validation & Safety Platform is one of three pillars inside the new System Health, Validation & Insights Platform group in Productivity Engineering. Our mandate: catch safety and correctness regressions in human-written or agent-generated code before they reach production.

Netflix's agent fleet now writes, tests, refactors, and deploys code continuously across every domain. As agent volume grows, the constraint shifts from producing changes to knowing which ones are safe. Quality assurance can no longer be a human-gated step at the end of a PR — it has to be embedded at every stage of the developer loop, proactive and automated.