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October 17, 2026

Senior Network Engineer

Senior • On-site

48,000 - 88,000 EUR/yr

Hamburg, Germany

Quick Facts

  • Role: Senior Network Engineer (unlimited full-time)

  • Focus: IP routing infrastructure for a science network; configuration, operation, automation, and 2nd-level support

Description

You will plan and operate routing infrastructure for the Hamburg science network within a regional data center environment. The role includes configuring and monitoring Cisco routers (IOS-XR and IOS-XE), improving security, resiliency, and operational performance, and supporting participating institutions with 2nd-level troubleshooting. You will also analyze and resolve issues at the shared Internet connection in cooperation with partner institutions and other providers (e.g., DFN-NOC) and coordinate operational changes with partners and DFN.

Responsibilities

  • Plan and operate cross-institution routing infrastructure for the science network at the Hamburg site

  • Configure and monitor Cisco routers (IOS-XR and IOS-XE)

  • Develop measures to enhance security, failover resilience, and communication-network operational optimization

  • Advise participating institutions and provide 2nd-level support

  • Analyze and remediate issues at the shared Internet connection in collaboration with participating institutions and other providers (including DFN-NOC)

  • Perform cross-team quality assurance and manage ticket handling

  • Coordinate operational changes with Hamburg cooperation partners and DFN

Requirements

  • Master’s degree (or equivalent) in Computer Science or a comparable field

  • Equivalent skills, experience, and qualifications

  • Several years of experience in designing, building, and operating campus/provider IP routers

  • Strong IP routing knowledge and ability to configure multiple routing protocols: BGP, OSPF, EIGRP, IS-IS

  • Knowledge of VRF and EVPN-VXLAN concepts

  • Experience configuring Cisco routers, especially IOS-XR and IOS-XE

  • Experience in designing large networks; knowledge of Multicast, QoS, MPLS

  • Experience with network automation using Python or Ansible

  • Juniper and Arista router configuration experience is desirable

  • Excellent German (written and spoken) and good English skills

  • Fast comprehension plus very good teamwork and communication skills

  • High responsibility and stress resilience

Benefits

  • Unlimited full-time position with flexible working hours

  • 30 days of vacation per year

  • Training and professional development opportunities

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