[Hiring] Sr. Staff Network Engineer @Zscaler

Role Description

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, seeing it as an opportunity to build something meaningful.
• You act like an owner, operating with integrity and a passion for the mission.
• You are a problem-solver, focused on finding solutions to deliver the biggest impact.
• You are a high-trust collaborator, ambitious for the team and embracing ongoing feedback.
• You are a learner with a growth mindset, actively seeking feedback to improve.

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.
• 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)

• Experience designing and optimizing high-performance, low-latency network infrastructure for AI training workloads, HPC environments, and GPU cluster interconnectivity.
• Strong Linux/Unix background with scripting/programming skills in shell, Python, or Perl.
• Deep expertise in DNS, HTTPS, GRE, and IPsec, including automation of large-scale end-to-end deployments.
• Relevant advanced networking certifications such as CCIE Enterprise Infrastructure/Service Provider, JNCIP-ENT, JNCIP-SP, or similar are a plus.

Benefits

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