operational services GmbH & Co. KG | Germany | 80xxx, 01xxx, 81xxx, 70xxx, 65xxx, 90xxx, 20xxx, 60xxx, 22xxx, 21xxx, 10xxx, 14xxx, 13xxx, 12xxx, 11xxx Frankfurt am Main, Berlin, Dresden, Hamburg, Leinfelden-Echterdingen, München, Nürnberg | Permanent position | Full time / Home office | Published since: 11.02.2026 on stepstone.de
Network administrator (m/f/d)
operational services (OS) is one of the leading ICT service providers in the German market and is considered to be the backbone of digitalization. It is the leading agile unit of the Telekom Group in order to continuously accelerate the digital transformation in the German middle class. With over 1,000 highly qualified employees, it develops and operates state-of-the-art information systems, manages private & public cloud platforms, secures long-term 24/7 system support and the availability of critical operating processes. COURT: 992026009FWI
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Your tasks • Your profile • What we offer
Operation, administration and development of modern network and security infrastructures Planning and implementation of commissioning and ensuring a stable network operation Analysis and troubleshooting incl. Documentation in the Trouble Ticket System Control of escalation in critical incidents Expert contact for internal teams and cooperation in cross-disciplinary projects Integration of new customers and services and evaluation of new technologies
Multiannual professional experience in IT administration of network and security infrastructures
Wide technical understanding and sound knowledge of modern network topologies (Ethernet, WLAN)
Very good knowledge of TCP/IP, OSPF, BGP and MPLS as well as safe handling of Cisco IOS and ACI (e.g. CCNA/CCNP)
Good knowledge of Multicast, DHCP, DNS, NAT, TACACS and RADIUS as well as experience with Cisco ASA and FirePower
Very good knowledge of German and English
Germany-wide mobile work Attractive salary package with participation 37 hours/week with working time accounts Employer-funded training and certification Another plus is our bicycle leasing, 30 days holiday, subsidised Germany ticket, employee-funded retirement provision, asset-effective services, group accident insurance for work and leisure as well as employee conditions for many products from the Deutsche Telekom Group. .
Location
 | operational services GmbH & Co. KG | |
| Frankfurt am Main, Berlin, Dresden, Hamburg, Leinfelden-Echterdingen, München, Nürnberg | ||
| Germany |
The text of this ad was translated from German into English using an automatic translation system and may contain semantic and lexical errors. Therefore, it should be used for introductory purposes only. For more detailed information, see the original text of the ad at the link below.
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