Senior Network Engineer | Senior Network Engineer (w/m/d)

SPIRIT/21 GmbH

Rüsselsheim am Main, Hessen, Deutschland
Published Apr 27, 2026
Full-time
Permanent

Job Summary

As a Senior Network Engineer, you will be responsible for the design, implementation, and operation of complex LAN, WLAN, and WAN infrastructures within data center environments, supporting both local and international locations. Your day-to-day work involves leading network projects such as hardware refreshes, migrations, and infrastructure modernizations. You will serve as a 3rd-level support expert for complex troubleshooting and focus on optimizing network performance, scalability, and high availability. Additionally, you will define and implement security standards, network segmentation, and automation workflows. This role requires a strong technical background in routing, switching, and firewall technologies. You will also be responsible for creating detailed high-level and low-level designs (HLD/LLD) and acting as the primary technical contact for clients and internal stakeholders. This position offers a unique opportunity to shape the network architecture of an enterprise environment while working with cutting-edge technologies and driving automation initiatives.

Required Skills

Education

Completed IT vocational training (e.g., IT Specialist for System Integration) or a degree in Computer Science or Network Engineering.

Experience

  • At least 8 years of professional experience in enterprise networking including LAN, WLAN, and WAN
  • Professional experience in routing, switching, and network protocol management
  • Proven experience in network security implementation and troubleshooting
  • Experience working with enterprise-grade hardware vendors such as Cisco, Fortinet, Check Point, Aruba, or Meraki
  • Experience in network automation, scripting, and monitoring toolsets

Languages

German (Fluent)English (Fluent)

Additional

  • Relevant certifications such as CCNP, CCNA, CWNP, or Check Point Certified Security Administrator are considered an advantage.