Sr. Staff Network Engineer

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 world’s 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 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.

Role

We are looking for a Sr. Staff Network Engineer to join our team. This is a role based in the Netherlands, reporting to the Manager, Network Engineering in the Cloud Ops - Network Engineering department. This position involves a mix of infrastructure, project management, and network engineering responsibilities.

You will join our global team as an integral member, taking ownership of the deployment, monitoring, and ongoing operation of our worldwide production infrastructure across diverse data center locations.

We are seeking a high-trust collaborator with a background in large-scale enterprise or telecom networks who approaches challenges with a growth mindset and a commitment to achieving engineering excellence.

This role requires active participation in our technical on-call rotations, which include support during weekends and holidays to ensure continuous service reliability.

What you’ll do (Role Expectations)

Plan, implement, document, and manage data center cabinet layouts and power density to ensure maximum efficiency and reliability

Oversee server capacity deployments, integrating infrastructure with automation to support global scalability and optimized resource utilization

Collaborate with project management and engineering development teams to align on service requirements and hardware integration

Work across functional teams to ensure the seamless synchronization of hardware, software, and network resources

Provide expert technical guidance and troubleshooting support for complex data center infrastructure-related issues, including participating in weekend and holiday on-call rotations

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)

Minimum 8 years of hands-on experience with high-speed networks (10G to 100G+), expert-level BGP routing and troubleshooting for IPv4/IPv6 in large-scale environments, and strong remote data center operations experience including device configuration, fiber debugging, and patching issue resolution.

In-depth understanding of core networking concepts, including TCP/IP stack performance, with practical experience in IP packet analysis using Wireshark or similar tools; foundational knowledge of AI/ML technologies and experience applying, securing, or positioning AI-driven solutions within the functional domain.

Proven ability to manage complex priorities across ticketing and inventory systems, strong written and spoken English skills, and either relevant organizational experience or a Bachelor’s Degree in Computer Science Engineering; additional language skills are a plus.

What Will Make You Stand Out (Preferred Qualifications)