Senior Software Engineer, AppSTAR COMPASS

Amazon
Austin, TX, USA2026-08-18ONSITE

About the job

Be a founding engineer on a brand-new team building security review for the LLM age. You'll design and write the platform that evaluates every code change tens of thousands of engineers ship, and clears the vast majority without a human ever touching it.

Security review has always been a bottleneck. A developer ships a change, waits for someone to look at it, and the security team drowns in a queue it can never fully clear. We're ending that tradeoff. Our engine evaluates changes as they happen, decides how much scrutiny each one actually needs, and handles the common case automatically with no wait for the developer and no queue for the reviewer.

The team is funded and forming now, and the first engineers will set the architecture. That means real design ownership, not a codebase you inherit, and experienced security engineers backing you with the risk expertise so you build against what actually matters. If you want to work on agentic systems where the correctness bar is high and the impact is measurable, this is the seat.

Responsibilities

- Design and build the core of an event-driven platform that evaluates code changes for security risk, routes the small fraction needing human attention, and clears the rest automatically.

- Own significant technical decisions end to end: data flow, evaluation pipeline, service boundaries, storage, and the tradeoffs behind each one.

- Build and tune the automated evaluation layers, including agentic checks, and the mechanisms that keep their decisions accurate over time.

- Partner closely with the security team that defines how risk is evaluated, turning their criteria into production code that runs reliably at scale.

- Work directly with the security engineers who handle escalated changes, building the queues, context, and tooling that make their reviews fast.

- Build the developer-facing experience: clear, trustworthy visibility into what was evaluated, what happened, and why, with as close to zero required action as possible.

- Negotiate and implement the integrations with adjacent platform and telemetry teams the system depends on.

- Raise the engineering bar on a new team: code review, design review, testing strategy, operational readiness, and on-call fundamentals from the start.

- Mentor engineers and help interview and grow the team as it scales.

Qualifications

Minimum

- 5+ years of non-internship professional software development experience

- 5+ years of programming with at least one software programming language experience

- 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience

- Experience as a mentor, tech lead or leading an engineering team

Preferred

- 5+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience

- Bachelor's degree in computer science or equivalent