Principal System and Solution Test Engineer

The role

This Principal System and Solution Test Engineer will drive the quality strategy for Zero Trust Networking Services. The role validates network security architectures and how branch networking devices work with global SASE cloud services. It includes building automation suites and designing real-world test scenarios.

What you will do

• Collaborate with cross-functional teams to design, develop, and maintain cloud-based software solutions
• Test cloud-delivered security and SD-WAN technologies using deep L2-L7 expertise
• Build repeatable, robust system-level automation suites to validate L2-L7 technologies
• Give the development team insights and recommendations to improve RASS, debugging capabilities, and product usability
• Design and run scenarios that mimic real-world production environments to expose gaps before customer deployments

Required qualifications

• Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions
• 12+ years of overall experience in Network Security, SD-WAN, or Networking Infrastructure testing
• Strong proficiency in Python for tool development
• Proven expertise building and maintaining Test Automation Frameworks from the ground up
• Experience using Terraform or CloudFormation for complex cloud test environments
• Deep understanding of L2-L7 networking, TCP/IP stack internals, and performance testing methodologies using industry-standard traffic generators
• Strong exposure to SD-WAN technologies, VPNs, and Cloud Security architectures
• Advanced knowledge of Linux networking concepts
• Solid understanding of tunneling methods such as IPSEC or GRE
• Hands-on experience with public cloud networking in AWS or GCP

Nice to have

• Proven ability to leverage AI technologies and workflows to drive measurable operational efficiency
• Demonstrated ability to translate a holistic view of the product into complex test scenarios that simulate real-world deployment environments
• Experience with industry-standard traffic generation tools and methodologies

Benefits

• Various health plans
• Time off plans for vacation and sick time
• Parental leave options
• Retirement options
• Education reimbursement
• In-office perks

Before you apply

• Applicants must adhere to applicable laws, regulations, and Zscaler security and privacy policies
• Zscaler offers accommodations in its recruiting process for differently abled, neurodivergent, and other candidates who request support

About the company

Zscaler (NASDAQ: ZS) provides the Zero Trust Exchange platform, which protects customers from cyberattacks and data loss by securely connecting users, devices, and applications. Its SASE-based platform runs across 200+ public data centers and thousands of private edge sites.