Senior Site Reliability Engineer (Cortex)

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. 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: Join a team of senior engineers operating in a large-scale, multi-cloud production environment supporting tens of thousands of enterprise customers worldwide. This is not a typical SRE role — you’ll work at the core of a complex, high-impact system alongside experienced DevOps professionals in a fast-paced, cybersecurity-focused organization. Your Impact: Own and operate large-scale, global production environments across multiple cloud providers (GCP, AWS, Azure) Actively monitor, investigate, and resolve incidents triggered by automated alerting systems (PagerDuty / Incident Response) Drive end-to-end troubleshooting across complex, distributed systems with high context switching Design, deploy, and improve monitoring and observability systems (e.g., Prometheus, Grafana) — not just react to alerts Collaborate closely with internal teams (CX, CS, Engineering) to ensure system reliability and performance Work hands-on with modern DevOps and infrastructure tools including Kubernetes, Terraform, CI/CD pipelines, and GitOps workflows Develop and maintain automation and tooling (primarily in Python) Gain deep understanding of system architecture and interconnected services Contribute to a culture of operational excellence in a high-scale, high-availability environment