Principal Security Researcher

Our Mission

At Palo Alto Networks®, we’re united by a shared mission—to protect our digital way of life. We thrive at the intersection of innovation and impact, solving real-world problems with cutting-edge technology and bold thinking. Here, everyone has a voice, and every idea counts. If you’re ready to do the most meaningful work of your career alongside people who are just as passionate as you are, you’re in the right place.

Who We Are

In order to be the cybersecurity partner of choice, we must trailblaze the path and shape the future of our industry. This is something our employees work at each day and is defined by our values: Disruption, Collaboration, Execution, Integrity, and Inclusion. We weave AI into the fabric of everything we do and use it to augment the impact every individual can have. If you are passionate about solving real-world problems and ideating beside the best and the brightest, we invite you to join us!

We believe collaboration thrives in person. That’s why most of our teams work from the office full time, with flexibility when it’s needed. This model supports real-time problem-solving, stronger relationships, and the kind of precision that drives great outcomes.

Job Summary

Your Career

As a Principal Security Researcher, you will work at the forefront of AI-assisted vulnerability research, focusing on the design, implementation, and improvement of AI/security harnesses for discovering, validating, understanding, and reporting high-impact vulnerabilities in real-world software and open-source projects. You will leverage LLMs, AI agents, fuzzing, static and dynamic analysis, reverse engineering, exploitability analysis, and security automation to build reliable workflows for vulnerability discovery, PoC generation, finding validation, patch validation, variant analysis, and remediation support.

Your Impact

This is a research-heavy role for a self-directed researcher-builder. The ideal candidate can independently identify high-impact security problems, build reliable harnesses and evaluation pipelines, analyze large-scale vulnerability data, and drive projects toward concrete outcomes such as improved harness capabilities, validated findings, technical reports, benchmarks, responsible disclosures, open-source tools, CVEs where appropriate, or production-impacting security workflows. We prioritize finding quality and research impact over raw vulnerability counts.

• Design, build, and improve AI/security harnesses for vulnerability research, with emphasis on reproducibility, validation quality, exploitability clarity, false-positive reduction, and stable evidence generation.