Senior Principal Engineer Software

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.

Your Career Palo Alto Networks’s Advanced DNS Resolver service team is looking for a Principal Software Engineer with strong programming skills and extensive background in developing DNS infrastructure products. You will be part of a world‑class software engineering team working on a global DNS resolver service that integrates world‑class DNS security with highly available and high‑performance DNS resolver. You will enjoy working in a small team and delivering features at a fast pace to production with excellent quality.

• Responsible for complete software development process including requirement analysis, design, development, deployment, and support
• Collaborate with other cross‑functional teams to create tight integrations of product features and infrastructure
• Write clean, testable, readable, scalable, and maintainable code that scales and performs well for thousands of customers
• Participate actively and be a factor in design and development discussions
• Identify areas for improvement within the team and actively push for positive change through new initiatives or optimizations
• Ability to troubleshoot issues in production environment and continuously improve the code and process to reduce the impact

• 7+ years of solid experience in programming, design and development
• Extensive hands‑on (expert level) programming skills in Golang and Python
• Extensive experience working on public cloud platforms like GCP and AWS, with good understanding of cloud networking, IAM roles and policies, and experience using cloud native services like pubsub, cloud storage and Big Query
• Exposure to CI/CD pipelines and tooling such as Git Lab, etc.
• Experience in delivering application performance monitoring visualizations with any of the following – Grafana / ELK / Cloud monitoring
• In‑depth understanding of DNS protocols, extensions, DNS resolution infrastructure and ecosystem
• Knowledge of networking and routing protocols like BGP, TCP/IP, HTTPS, SSL/TLS, etc.
• M.S./B.S. degree in Computer Science or Electrical Engineering

The compensation offered for this position will depend on qualifications, experience, and work location. For candidates who receive an offer at the posted level, the starting base salary (for non‑sales roles) or base salary + commission target (for sales/com‑missioned roles) is expected to be the annual range listed below. The offered compensation may also include restricted stock units and a bonus.

A description of our employee benefits may be found here ().

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We’re trailblazers that dream big, take risks, and challenge cybersecurity’s status quo. It’s simple: we can’t accomplish our mission without diverse teams innovating, together.

We are committed to providing reasonable accommodations for all qualified individuals with a disability. If you require assistance or accommodation due to a disability or special need, please contact us at…