Software Engineer (Frontend)

Cybersecurity titans are born when a new attack vector overwhelms existing defenses. When ransomware ran rampant, CrowdStrike emerged as the category leader for securing user endpoints. Today, AI has made account compromise the #1 cybercrime . LLM-powered phishing messages get past email security, allowing attackers to compromise accounts and exfiltrate sensitive data in minutes. Incumbents can't keep up. They catch these attacks late, or miss them altogether.

Enter Petra, security for when no perimeter remains. We are building an AI-driven Detection and Response platform to catch and remove attackers before they can act.

We've grown very quickly, reaching mid-7-figures in ARR in under a year — we now protect over 1.6 million users across 10,000+ businesses. We win 90%+ of head-to-heads. We price premium, yet have extremely low customer churn. Our customers consistently tell us that Petra is the best product they've ever used . You can see a demo here .

You'll be our first frontend engineer. You'll own the function.

We have a growing customer base and a deep backlog of things they're asking us to build. We're expanding Petra into new user flows and product surfaces every week. When you ship something good, customers feel it fast, and every win builds Petra's reputation and earns the trust to do more for them.

You'll be the domain expert for how it feels to use Petra. You'll collaborate with our design team to decide what great looks like, then build it.

Turn rough ideas into shipped product. Start from a loose Figma exploration, a customer problem, or a half-formed intuition, and take it all the way to production-ready UX.

Raise the bar for product quality, end to end. Visual design, interaction design, accessibility, responsiveness, performance, and the micro-details most people never get to. You care about how the whole thing fits together.