• Design, implement, and maintain Cisco-based network infrastructure. • Configure and support Cisco routers, switches, wireless solutions, and security devices. • Monitor network performance and ensure high availability of services. • Troubleshoot network connectivity, routing, switching, wireless, and security issues. • Manage VLANs, VPNs, QoS, STP, OSPF, EIGRP, BGP, and network segmentation. • Support Cisco Meraki, Catalyst, Nexus, and other Cisco technologies as applicable. • Conduct health checks and performance assessments of network environments. • Implement network security best practices and compliance requirements. • Collaborate with client stakeholders and third-party vendors. • Prepare technical documentation, network diagrams, and operational procedures. • Provide recommendations for network improvements and modernization. • Support migration, deployment, and infrastructure upgrade projects.

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Here, impact in your role matters more than title and trust is built on results. We say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership, and accountability. We value high-impact, high-accountability with a sense of urgency where you’re enabled to do your best work and embrace your potential. If you’re driven by purpose, thrive on solving complex challenges, and want to be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity. Role We are looking for a Sr. Staff Network Engineer to join our team. This is a fully remote capacity in the Netherlands role, 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) - 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, plus 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. #LI-REMOTE #LI-MM8 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 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. 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. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

• Meeting with business units and clients to determine and capture detailed requirements • Clarifying a system specification, understanding work practices and the nature of the business of the requestor and stakeholders • Planning project timelines • Creating high-level implementation plans when required • Developing agreed solutions and implementing new systems • Presenting solutions in written or oral reports • White-boarding complete or partial solutions • Creating project deliverables • Designing, installing, integrating, testing, and monitoring new systems • Contribute and refine the team’s process and methodology, including documentation.

• Interact with external customers to troubleshoot any network connectivity-related issues. • Partner closely with Network Architects and Engineers to improve data-center network environments. • Initiate multiple projects for Network Operation improvements. • Partner with internal business units to best understand the organization's needs and continuously improve and apply standards for operational excellence. • Review, analyze, and execute network change requests. • Execute, document, and develop network automation for repetitive tasks.