Principal Development Engineer

We built the Zscaler architecture from the ground up as a platform that could extend to new features and services. Our Product Management team takes hold of this massive opportunity to deliver our customers a growing portfolio of never-before-seen capabilities in threat prevention, visibility, scalability, and business enablement. Our product managers are champions of innovation with a shared vision for Zscaler and the limitless possibilities of cloud security. Join us to make your mark on the planning and product roadmap at the forefront of the world’s cloud security leader.

We are seeking a skilled Networking and System Engineer with expertise in system engineering. Reporting to the Director, Software Engineering. Your responsibilities will be:

• Designing and optimizing system infrastructure for high-performance networking and applications.


• Collaborating with teams to resolve system issues and improve performance.


• Applying expertise in system architecture, scalability, and performance optimization.


• Leveraging knowledge of Linux kernel, disk partitioning, file systems, and networking features.


• Developing specification documents, conducting unit tests, and automating processes

What We’re Looking for (Minimum Qualifications)

• 8+ years of system engineering experience, specializing in designing and optimizing infrastructure for high-performance applications and networks.


• Expertise in Linux internals, networking features, data paths (kernel/user space), and file systems.


• Skilled in C programming, Linux kernel tools (Git, Make), and agile methodologies.


• Familiar with NFV, SDN, and cloud platforms like AWS and Azure

What Will Make You Stand Out (Preferred Qualifications)

• Effective communicator and collaborator, skilled in working with cross-functional teams.


• Strong problem-solving abilities, capable of efficiently debugging complex issues.


• Understanding of containerization technologies (e.g., Docker, Kubernetes) and DevOps tools (e.g., Ansible, Puppet).

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