Zscaler

Principal Software Development Engineer

United States

Principal

HYBRID

Zscaler is hiring a Principal Software Development Engineer to work on the world's largest cloud security platform. This hybrid role focuses on designing and optimizing high-performance networking and security systems, including Linux kernel-based networking, stateful firewalls, tunneling protocols, and Zero Trust Security Services. You will collaborate with architects, product managers, and customers, mentor junior engineers, and ensure compliance with federal certifications such as FedRAMP and FIPS. The role requires 10+ years of system engineering experience and proficiency in Go and Pyt...

Linux kernel networking (L2/L3)

Stateful firewalls

NAT

Network drivers

Routing protocols

Tunneling technologies

Go (Golang)

Python

System design

Debugging complex data path issues

FIPS compliance

FedRAMP compliance

SOC2 compliance

Common Criteria

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