Senior Inhouse IT System Engineer (m/f/d)

  • starting immediately
  • Cologne (Mediapark)
  • Permanent
  • Full-time

We are: THE experts of the first hours around domains. We have more than 20 years of experience in e-commerce and we work in interdisciplinary teams every day to create the best possible user experience for more than 2 million customers worldwide. Our common goal? Success that is sustainable! The IONOS group provides support in the background to achieve this goal.


Do you think outside the box and enjoy new technologies? Do you have good organizational skills, like to work independently but also in a team and always keep an eye on the essentials? Are you confident in dealing with IT infrastructures such as servers, clients, storage and switches? Then ensure security and consistent operation with your strong customer and service orientation and drive new exciting projects in migration, service and maintenance together with us!

Your tasks:

  • Planning, further development, installation/configuration and maintenance of wired and wireless network infrastructure solutions
  • Support of network, VPN and telecommunication systems, firewalls, IT-Security
  • Planning and installation of security policies
  • Project management, consulting and support in the implementation of processes and projects

Your profile:

  • In-depth knowledge of network protocols and infrastructure (TCP/IP, WAN/LAN/WLAN, routing, switches)
  • Deep knowledge of Microsoft server infrastructure, Windows server operating systems in the server and database environment, and Powershell
  • Expertise in Hyper-V environments, Document Management Systems (DMS), Palo Alto Firewalls, Manage Engine Endpoint Control
  • In-depth experience in PowerShell
  • If possible, several years of in-depth professional experience in the administration of Veeam backup solutions for servers & clients
  • Very good language skills in German and English

Our benefits for you:

  • Work-life balance: trust-based working hours, home office, 30-day vacation entitlement, fitness offers
  • Environmentally friendly way to work: employer-financed Deutschland job ticket
  • Free choice of hardware: MacBook Pro or Dell notebook
  • Top offices: central location in the Mediapark and freshly renovated rooms with latest equipment
  • Personal development: individual training agreements
  • Attractive employee discounts: corporate benefits, ticketsprinter
  • Refreshments: coffee / tea / water, fresh fruits
  • Company events: summer, Christmas and team events
  • Rock-solid job in future proofed industry!


Sedo GmbH

Van Nghiem

Talent Acquisition (PX)

Tel: +49 221 340 30 290