Senior Staff Software Development Engineer, ZIA Core Datapath

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 160 public exchanges globally and thousands of private exchanges at the edge the SASE-based Zero Trust Exchange is the worlds largest in-line cloud security platform.

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 worlds 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.

Role

We are looking for a Senior Staff Software Development Engineer ZIA Core Datapath to join our team. This is a hybrid (3 days per week in San Jose CA office) role reporting to the Sr Manager Software Engineering QA in the ZIA Engineering this role you will own the architecture development and maintenance of a high-scale system test automation infrastructure for ZIA Core Datapath a cloud security platform processing 400B transactions daily. You will build repeatable automation suites for L4-L7 technologies validate cloud firewall and tunneling stacks diagnose customer issues and mentor engineers while driving continuous regression optimization.

What youll do (Role Expectations)

• Collaborate with cross-functional teams during design development and maintenance of cloud-based software solutions
• Architect design develop and maintain a scalable system test automation infrastructure for a cloud product processing 400B transactions per day
• Build repeatable automation suites to validate L4L7 technologies including cloud firewall IPsec/GRE tunneling load balancers IPS/IDS and routing/switching
• Act as an owner and advocate for testing at scale pushing the limits of the software under test through proficient coding methodologies and strong debugging/troubleshooting
• Mentor and guide junior engineers take full ownership of features and continuously optimize the regression cycle

Who You Are (Success Profile)

• You are a pragmatic builder obsessed with creating iterating and shipping balancing technical excellence with the need to deliver value to users quickly.
• You act like an owner with a deep passion for the mission operating with integrity and seamlessly navigating between high-level strategy and hands-on execution.
• You are driven by innovation and technical curiosity continuously energized by solving complex challenges and finding scalable secure solutions.
• You operate with urgency and a bias for action understanding that speed and quality go hand in hand to deliver high-impact results.
• You are a high-trust collaborator who thrives on open feedback and clarity driving collective success and building strong team alignment.

What Were Looking for (Minimum Qualifications)

• Foundational understanding of AI/ML technologies and experience leveraging securing or positioning AI-driven solutions to optimize outcomes within your functional domain
• 12 years of overall experience with strong programming skills in building test automation frameworks in Python
• Solid understanding of the TCP/IP protocol stack HTTP(S) TLS PKI DNS DHCP VPN HA routing and switching and tunneling methods such as IPsec/GRE
• Strong background in L3 L4 and L7 filtering policies with hands-on exposure to load balancers IPS/IDS and routers
• Proven experience in manual and automated functional integration performance and scale testing for cloud security/SaaS products including test plan and test case creation
• Excellent debugging/troubleshooting skills to diagnose and resolve complex network infrastructure HTTP/SSL and firewall issues in customer environments

What Will Make You Stand Out (Preferred Qualifications)

• Experience leveraging AI-assisted coding static/dynamic analysis or intelligent automation tools to improve test coverage and engineering productivity
• Hands-on experience with traffic generators performance/load testing tools and fuzzing techniques
• Track record of mentoring junior engineers and leading large-scale test automation or quality initiatives for distributed cloud systems

#LI-KM9 #LI-Hybrid

At Zscaler we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages including:

By applying for this role you adhere to applicable laws regulations and Zscaler policies including those related to security and privacy standards and guidelines.

Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race color religion sex (including pregnancy or related medical conditions) age national origin sexual orientation gender identity or expression genetic information disability status protected veteran status or any other characteristic protected by federal state or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.

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