Zscaler
Principal System and Solution Test Engineer
$186K–$265K
Santa Clara, California, USA · Principal · Full-time · Posted Sep 28, 2026
- Experience
- 12+ years overall in Network Security, SD-WAN, or Networking Infrastructure testing.
About the job
Drives quality strategy and system-level testing for Zero Trust Networking Services, validating network security architectures and interactions between branch devices and global SASE cloud services.
What you'll do
- Build and maintain automated system-level test suites for L2-L7 technologies and cloud test environments.
- Test cloud-delivered security and SD-WAN technologies using production-like scenarios.
- Recommend improvements to RASS, debugging capabilities, and product usability.
What they ask for
- Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions.
- 12+ years of experience in Network Security, SD-WAN, or Networking Infrastructure testing, with strong Python proficiency.
- Experience building test automation frameworks from the ground up and using Terraform or CloudFormation for cloud test environments.
- Deep knowledge of L2-L7 networking, TCP/IP internals, performance testing, SD-WAN, VPNs, cloud security, Linux networking, IPSEC or GRE, and AWS or GCP networking.
Nice to have
- Ability to use AI technologies and workflows to improve operational efficiency.
- Experience translating product understanding into realistic deployment test scenarios and with industry-standard traffic-generation tools and methodologies.
Pay
$185,500 — $265,000 USD (base salary)
Tools
Python, Terraform, CloudFormation, TCP/IP, Linux, IPSEC, GRE, AWS
AI focus
Requires foundational AI/ML understanding and experience leveraging, securing, or positioning AI-driven solutions; preferred to use AI workflows to improve operational efficiency.
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