IT System Engineer, Network and Security | IT System Engineer (all genders) Netzwerk und Security

DATAGROUP Köln GmbH

Köln, Nordrhein-Westfalen, Deutschland
Published Dec 3, 2025
Full-time
Permanent

Job Summary

This role involves joining an IT Operations Team based in Cologne-Mülheim, focusing on operating and expanding the IT infrastructure for numerous mid-sized clients. The System Engineer will be responsible for 2nd and 3rd level incident, change, and problem management within heterogeneous customer networks, primarily handled remotely. Key daily tasks include planning and implementing network projects, analyzing network faults, communicating with manufacturers and clients for troubleshooting, and maintaining network documentation and CMDBs. A critical component of the job is providing presales support for network and security technologies and participating in a 24x7 on-call rotation. The ideal candidate possesses a relevant IT qualification or degree, extensive professional experience in network and security technologies, practical experience with major vendors like Cisco and Fortinet, and strong analytical and problem-solving skills, complemented by fluent German (C1/C2) and proficient English.

Required Skills

Education

Completed IT training (e.g., IT Specialist for System Integration or IT System Electronics Technician) or a degree in Computer Science

Experience

  • Several years of professional experience as a System Engineer in Network and Security technologies
  • Practical experience with Cisco, Fortinet, and Check Point products
  • Initial experience with Microsoft Azure network products
  • Experience with common tools and operating systems in a network environment (Linux, Wireshark)

Languages

German (Fluent)English (Intermediate)

Additional

  • Willingness to travel when customer projects are realized outside of Cologne; Participation in 24x7 on-call rotation (Rufbereitschaft)