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# Staff Software Engineer

- **Company:** PETRA SECURITIES
- **Location:** San Francisco, CA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Application Integration Architecture, Python (Programming Language), Node.Js, Software Engineering, TypeScript, ReactJS
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/staff-software-engineer-backend-distributed-systems-petra-security-8349117

## About the Role

* 3+ years of software engineering experience, with meaningful time working on production systems at scale.
 * Experience building high-stakes, data-intensive systems. Re-architecting the hot path doesn't scare you away.
 * Strong ML/AI integration experience. You've shipped systems that use models in production, not just experimented with them.
 * High agency and high output. You identify the problem, propose the solution, and execute. You're constantly looking for ways to expand your scope and circle of competence.
 * Sharp and scrappy. You learn fast: you ask the right questions and figure it out. You ship fast: you find the 90/10 and don't let perfect be the enemy of done.
 * Comfortable in a small-team, high-autonomy environment. The scope of your work is rarely handed to you, and you wouldn't have it any other way.
 * Proud of your craft. You care about building things that work well and hold up over time.

## Description

* Build and evolve our detection platform. Working closely with our founding team, you'll help design and build the systems that identify account compromise in real time - spanning signal ingestion, behavioral analysis, and AI-powered decisioning.
 * Architect for scale. We're growing fast. Nothing excites you more than architecting and implementing an elegant solution that'll handle 10-100x the scale in 6 months.
 * Raise the technical bar. As a senior voice on a lean team, your instincts and opinions shape how we build. You'll establish patterns, push for correctness, and raise the quality of everything around you.

Our stack is Node, TypeScript, React, and Python... for now.


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