Principal System and Solution Test Engineer

<div class="content-intro"><p data-pm-slice="1 1 []">Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200+ public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform.</p> <p>We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler.</p></div><p><strong>Role</strong></p> <p>We are looking for a Principal System and Solution Test Engineer to join our team. This is a hybrid role based in Santa Clara,CA, reporting to the Architect, Software Development Engineering in the Zero Trust Branch department. You will drive the quality strategy for our Zero Trust Networking Services, validating complex network security architectures and end-to-end interactions between branch networking devices and global SASE cloud services through customer-centric scenarios.</p> <p><strong>What you’ll do (Role Expectations)</strong></p> <ul> <li>Collaborate with cross-functional teams to design, develop, and maintain cloud-based software solutions</li> <li>Leverage your deep expertise in L2-L7 technology to test cloud-delivered security and SD-WAN technologies</li> <li>Build repeatable, robust system-level automation suites to validate L2-L7 technologies</li> <li>Provide critical insights and recommendations to the development team to enhance RASS, debugging capabilities, and overall product usability</li> <li>Design and execute scenarios mimicking real-world production environments to proactively expose critical gaps, ensuring the stability required for seamless customer deployments</li> </ul> <p><strong>Who You Are (Success Profile)</strong></p> <ul> <li>You thrive in a dynamic, fast-paced environment, viewing ambiguity as a canvas for innovation and high-impact problem solving.</li> <li>You operate with a deep sense of ownership and personal integrity, driven by a genuine passion for the engineering mission.</li> <li>You are energized by complex technical puzzles, proactively seeking out challenging scenarios to deliver robust, scalable outcomes.</li> <li>You build strong empathy for the end-user, placing customer needs at the center of your architecture and design validation strategy.</li> <li>You maintain a high sense of urgency and relentless focus on execution, balancing speed and quality to win for the team and our customers.</li> </ul> <p><strong>What We’re Looking for (Minimum Qualifications)</strong></p> <ul> <li>Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain</li> <li>12+ years of overall experience in Network Security, SD-WAN, or Networking Infrastructure testing with strong proficiency in Python for tool development</li> <li>Proven expertise in building and maintaining Test Automation Frameworks from the ground up, utilizing Terraform or CloudFormation for complex cloud test environments</li> <li>Deep understanding of L2-L7 networking, TCP/IP stack internals, and performance testing methodologies using industry-standard traffic generators</li> <li>Strong exposure to SD-WAN technologies, VPNs, and Cloud Security architectures combined with advanced