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Palo Alto Networks Italia Logo Palo Alto Networks Italia · IT - Software Development

Principal Engineer Software

United States, Santa Clara 147000.00 - 237500.00 USD / Year · Job Posted February 05, 2026
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Job Description

In the Layer-7 Security Software team, we are responsible for at least one, often two to three headline features in every PANOS release. Our code reaches many product lines in the company, and is the critical part of delivering the highest revenue licenses the company offers. Our core Application Identification and Content Inspection Engine runs on Hardware, Virtualized, Container and Cloud-delivered firewalls. Any features that require the inspection or extraction of layer-7 network payload depends on our engine. We are also developing the latest Cloud-delivered Layer-7 security infrastructure. We design and develop key innovative security features such as the industry first Machine Learning powered NGFW, Credential Phishing prevention, URL-filtering, Cloud-delivered Data leak protection (DLP), and many more exciting features.

Job Responsibility

  • Innovate, design, develop and improve the Next-Generation Firewall in terms of functionality and performance, working on device identity solutions
  • Own and be responsible for critical components in the Next-Generation Firewall system
  • Deliver features and improvements in critical components in high quality and performance
  • As an expert on networking and security, work closely with team members and cross-team to design and architect innovative solutions
  • Work with product management on user requirements, apply your knowledge to functional design, utilize your programming skills for efficient and robust implementation, and interact with quality assurance and field support teams throughout the entire software development cycle

Requirements

  • Proficient in C programming under Linux development environment
  • Experience with multi-threaded programming and large-scale, distributed, and/or high-performance software design and architecture
  • Experience with TCP/IP networking software development
  • Experience designing & building scalable microservices with latest queueing technology and data pipelines
  • Experience with cloud platforms and kubernetes
  • Experience with one or more of Redis, SQL or NoSQL database
  • B.S. degree in Computer Science, similar technical discipline or equivalent practical experience, plus two or more years of relevant industry experience
  • Teammate who brings a can-do attitude to a dynamic working environment and is comfortable learning new technologies and platforms

Nice to have

  • Go, python experience preferred
  • Graduate degree (MS or Ph.D.) in Computer Science or similar technical discipline or equivalent military experience is preferred
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