Sr. Principal Software Engineer; Cortex Platform Santa Clara, California,

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.

The Team

Cortex - Cortex is a world-leading cybersecurity platform that provides comprehensive security solutions to protect organizations from advanced threats. Our team is responsible for developing and maintaining the core components of the Cortex platform, including the data pipeline, analytics engine, and user interface. We are a fast-paced and innovative team that is passionate about building the best security products in the world.

As a Senior Principal Backend Engineer in our Cortex group, you will be a key technical leader responsible for developing, innovating, and scaling the backend of our industry-leading products, including Cortex XSOAR, XDR, and XSIAM. You will focus on the Cortex Platform and contribute to shared infrastructures, tackling complex problems to deliver significant value to thousands of customers. This role requires a can-do attitude and a passion for solving the most challenging cybersecurity threats.

• Serve as an acknowledged technical leader, providing consultation and proactively collaborating across engineering teams to ensure alignment.
• Drive the full lifecycle of projects from requirements gathering to final design and implementation, acting as a project lead or mentor.
• Lead the alignment of planned work across the product by partnering with product management, UX design, and engineering stakeholders.
• Utilize a big-picture perspective to identify, analyze, and provide practical solutions for complex existing and impending technical problems.
• Design, build, and optimize highly scalable data models and queries using technologies such as MySQL and Big Query, focusing on the details to ensure performance.
• Develop robust business logic and API endpoints using Python and Flask, and build high-performance backend services using Go.
• Proactively identify, articulate, and mitigate risks in projects to ensure smooth execution and high-quality output.
• Mentor and empower other engineers across the department, fostering a culture of technical excellence and applied learning.

• Bachelor's or Master's degree in Computer Science, Computer Engineering, or a related technical field.
• 14+ years of professional software engineering experience, with a focus on distributed, cloud-native application development.
• Expert-level programming skills in Python, Go, or Java, with proven experience building large-scale distributed systems.
• Extensive experience with cloud development, including REST APIs, databases, serverless computing, and microservices architectures.
• Demonstrated experience as a hands-on technical lead or architect on complex software projects.

• 8+ years of hands-on experience with specific cloud technologies such as Elastic Search, Google Pub/Sub, or similar.
• Deep understanding of public cloud design considerations, including security, global network infrastructure, and load balancing.
• Proven ability to make…