What You'll DoOwnership is everything here. You'll have deep knowledge across the stack and own large parts of the platform - from our AI detection pipeline to the product surfaces that MSPs and security teams rely on every day.
Petra is a premium product and it's everyone's job to make sure it stays that way. That means you won't just write code - you'll talk to customers, map their workflows, find their time-sinks, and think creatively about how to make the product increasingly excellent.
Concretely, you will:
- 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.
- Drive product quality end to end. Take problems from raw customer insight through to shipped, production features. You care about the full loop, not just your slice.
- Architect for scale. We're growing fast. Make calls that let us move quickly today without incurring debt that bites us at 10x the user base.
- 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.
Who You Are- 3+ years of software engineering experience, with meaningful time in production systems at scale.
- Deep full-stack fluency - comfortable owning a feature from data model to UI, with strong opinions about where to draw the lines.
- Experience building data-intensive or real-time systems. Bonus if you've worked on security, fraud detection, or anomaly detection pipelines.
- 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 don't wait for a spec - you identify the problem, propose the solution, and execute. You ship fast, find the 90/10, and don't let perfect be the enemy of done.
- Sharp and scrappy. You learn fast, ask the right questions, and figure it out - whether that's a technical tradeoff, the right abstraction, or the right shortcut.
- 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.
The TeamWe're small and high-caliber. Our founders are ex-Abnormal Security, Palo Alto Networks, and Bridgewater. Other early team members include:
- A Sequoia-backed founder
- An engineering leader from Anduril
- Quants from Citadel and Point72
You'll work directly with people who are exceptional at what they do.
Benefits and Pay:- Competitive salary. We pay top dollar for exceptional engineers.
- Equity
- Healthcare, dental, vision
- Lunch and dinner when working in the office
- 401K
- Commuting stipend
- Equinox discount
- Relocation support
This role is in-person, here in SF.
