Senior Staff Software Development Engineer

• Design and optimize system infrastructure and data paths for high-performance networking and low-latency security applications
• Implement and optimize core networking protocols, including NAT, DNS, DHCP, and Policy Enforcement, to ensure enterprise-grade performance
• Leverage AI coding assistants and LLMs to optimize code for performance and memory safety while streamlining the development lifecycle through automated testing
• Resolve complex system issues by utilizing deep expertise in the Linux kernel, networking features, and file systems
• Develop detailed technical specification documents and conduct rigorous unit tests to ensure absolute system quality and reliability

Who You Are (Success Profile)

• You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful. - You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands-on execution. - You are a problem-solver. You love running towards the challenges because you are laser-focused on finding the solution, knowing that solving the hard problems delivers the biggest impact. - You are a high-trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback—knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust. - You are a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose. What We’re Looking for (Minimum Qualifications)

• 8+ years of systems engineering experience focused on designing and optimizing infrastructure for high-performance, low-latency applications

• Deep technical expertise in core networking protocols including IPsec, BGP, OSPF, and transport layer optimization (TCP/UDP)

• Advanced proficiency in Linux internals, systems programming with Python or Golang, and the use of Linux kernel tools

• Proven experience leveraging AI tools for system debugging, kernel-level observability, and code performance optimization

• Familiarity with agile methodologies and modern software development lifecycles in a fast-paced environment

What Will Make You Stand Out (Preferred Qualifications)

• Demonstrated ability to use AI tools for rapid protocol analysis and automated testing
• Hands-on experience with Software Defined Networking (SDN), cloud platforms like AWS/Azure, and containerization tools such as Docker or Kubernetes
• Strong communication skills with a track record of aligning technical execution with cross-functional product roadmaps

#LI-Hybrid #LI-SU1

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:

• Various health plans
• Time off plans for vacation and sick time
• Parental leave options
• Retirement options
• Education reimbursement
• In-office perks, and more! Learn more about Zscaler’s Future of Work strategy, hybrid working model, and benefits here. 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. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.