Posted Aug 29, 2026

Web Application Penetration Tester

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Nullify runs autonomous security work most teams can't staff for. This role is the human edge of that — validating what our agents find, going after what they can't, and feeding every technique back into the system so it gets sharper. What you'll do • Run deep, manual web app pentests against customer surface area that automated scanning alone won't catch — auth flows, business logic, multi-step exploit chains. • Turn novel findings into reproducible techniques that get encoded back into Nullify's detection and validation agents. • Partner with customer security teams during engagements, from scoping through report-back. • Keep pace with the frontier: new frameworks, new auth patterns, new classes of vulnerability. What you bring • Real-world experience finding and exploiting vulnerabilities in production web applications — OWASP Top 10 and beyond. • Comfort working close to the metal: reading application code, tracing requests, building custom tooling when off-the-shelf doesn't cut it. • A bias toward proof over speculation — you validate before you report. • Bonus: experience training or evaluating AI systems on security tasks.