Senior Network Engineer

Voor onze eindklant KPN is Harvey Nash op zoek naar een senior network engineer.

Start: 01-12-2026, Eind: 31-05-2026, Standplaats: Amersfoort, Uren: 40, Deadline inschrijven 16/11 om 12:00. Vacancy - Senior Network Engineer: Drive the migration of critical Extranet connectivity services. The Networks & Datacenter (NW&DC) organization within Platform & Technology (P&T) forms the foundation of the bank's IT landscape. We provide secure, scalable and resilient infrastructure services that support thousands of applications, users and business-critical processes.

To support the migration and modernization of our Extranet connectivity landscape, we are looking for an experienced Senior Network Engineer with strong hands-on expertise in enterprise networking and Cisco environments. You will become part of a dedicated project team consisting of a Project Manager, Security Engineer, and Network Engineer, responsible for delivering the successful migration of Extranet connections to the target infrastructure. You will play a key role in ensuring network stability, availability, and performance throughout the migration lifecycle.

Your Role: As a Senior Network Engineer, you will be responsible for designing, implementing, migrating, and supporting network connectivity services within a large-scale enterprise environment. You will act as both a subject matter expert and hands-on engineer, bridging project requirements, network architecture, implementation activities, and operational support. Your primary focus will be the migration of Extranet connectivity services while maintaining the highest standards of availability, security, and operational excellence.

What You Will Do: Network Engineering: Design, implement, and execute Extranet connectivity migrations. Configure and maintain Cisco Nexusbased network infrastructure. Analyze existing network connectivity and define targetstate designs. Implement network changes in accordance with governance and change management processes. Support routing, switching, segmentation, and connectivity services. Troubleshoot complex network issues and perform root cause analysis.

Support testing, validation, cutover, and post-migration stabilization activities.

Automation & Tooling: Contribute to network automation initiatives where applicable. Automate operational tasks using tools such as Python, Ansible, or API integrations. Improve efficiency through scripting, reporting, and standardized deployment processes. Support Infrastructureas-Code principles and network lifecycle management.

Your Profile: You are an experienced hands-on Network Engineer with strong technical expertise in enterprise networking, datacenter infrastructure, and connectivity migrations. You combine excellent troubleshooting skills with a structured project-driven approach and are comfortable working in highly regulated enterprise environments.

Required Experience: Minimum 5 years of experience as a Network Engineer within large enterprise environments. Proven handson experience with Cisco platforms. Strong knowledge of routing and switching technologies.

Experience with: BGP, OSPF, VLANs, VRFs, Network segmentation, High Availability solutions. Experience delivering network migration projects. Strong analytical and troubleshooting skills. Experience working in multidisciplinary project teams. Experience working within regulated environments is preferred.

Preferred Experience: Cisco Nexus. Extranet connectivity services. Enterprise WAN environments. Collaboration with Security Engineering and Infrastructure teams. Network automation using Python, Ansible, or REST APIs (optional).

Certifications: One or more of the following certifications, or equivalent experience: Cisco Certified Network Professional (CCNP Enterprise), Cisco Certified Specialist - Enterprise Infrastructure, Cisco Certified Internetwork Expert (CCIE Enterprise Infrastructure), Cisco Data Center Certifications, Equivalent industry-recognized network certifications.

What We Offer: A challenging 6month assignment within a strategic Extranet migration program. A key role in a focused project team consisting of a Project Manager, Security Engineer, and Network Engineer. The opportunity to work in a largescale enterprise networking environment. A collaborative environment with highly skilled infrastructure and security professionals.