> Markdown version of [/jobs/ext/4622354-principal-software-engineer-l7-security](https://www.wearedevelopers.com/jobs/ext/4622354-principal-software-engineer-l7-security). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Principal Software Engineer (L7 Security)

- **Company:** Palo Alto Networks
- **Location:** Santa Clara, CA, United States
- **Salary:** $150,000.0 - $250,000.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Application Layers, C++ (Programming Language), Computer Networks, Software Debugging, Software Engineering, TCP/IP, Information Technology, Software Version Control, Programming Languages
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25197_144ce1ab0294f4c4cfddd08ecdfb6207

## About the Role

* B.S. degree in Computer Science, similar technical discipline or equivalent practical experience, graduate degree (MS or Ph.D.) in Computer Science or similar technical discipline is preferred or equivalent military experience
 * Strong proficiency in C and C++ programming languages.
 * In-depth knowledge of networking concepts, including TCP/IP, and familiarity with security protocols such as TLS and L4-L7 protocols is a plus.
 * Experience in developing and optimizing software for performance, scalability, and security.
 * Solid understanding of software development methodologies, version control systems, and agile practices.
 * Excellent problem-solving skills and the ability to work independently and collaboratively in a team environment.
 * Verbal and written communication skills to work with multi-functional groups - a good team player who brings a can-do attitude to a dynamic working environment
 * Flair for coding in C/C++/GO.

## Description

* Innovate, design, and develop new security features in our next-generation firewalls in the Layer7 identity and inspection areas.
 * Develop functional specifications, assess task requirements and scheduling, and assist in development, debug and support
 * Suggest and implement improvements to the development process
 * Clearly communicate goals and desired outcomes to internal project teams - Interview, mentor and coach new team members
 * Identify performance bottlenecks and continuously implement improvements, To stay ahead of the curve, it's critical to know where the curve is, and how to anticipate the changes we're facing. For the fastest growing cybersecurity company, the curve is the evolution of cyberattacks, and the products and services that proactively address them. Our engineering team is at the core of our products - connected directly to the mission of preventing cyberattacks. They are constantly innovating - challenging the way we, and the industry, think about cybersecurity. These engineers aren't shy about creating products to solve problems no one has tackled before. They define the industry, instead of waiting for directions. We need individuals who feel comfortable in ambiguity, excited by the prospect of challenge, and empowered by the unknown risks facing our everyday lives that are only enabled by a secure digital environment.