Senior Administrator Netzwerk/Firewall - Custom Managed IT Services (m/w/d) - 992025025BPA

operational services (OS) is one of the leading ICT service providers in the German market and is regarded as a backbone of the digitization of the middle class. 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. STELLENKENNZIFFER: 992025025BPA

As a network / firewall administrator (m/w/d), you can provide customer solutions with the highest possible availability and performance. You are also responsible for the following tasks: Planning and implementation of complex network and firewall requirements for customer solutions Implementation of the 2nd level service according to ITIL with the involvement of other service providers (3rdlevel) Conception and administration of ISE, 802.1x and TACACS+

Master or Diploma with adequate professional experience or comparable knowledge and skills At least seven years of professional experience, of which at least five years in IT administration with corresponding complexity Detailed knowledge of some of the following products: CISCO Network, Firewalls Cisco FirePower and Fortinet; Ironport, Blue Coat; Wi-Fi and f5 products (e.g. Load Balancer) Experiences with CISCO ISE, 802.1x, RADIUS and TACACS+ Experiences in automation with Cisco DNA Center in the campus network Cisco Certification CCSP / CCNA are desirable ITIl certification of advantage Highly systematic and structured operation

High analytical and conceptual thinking

Very high flexibility, durability and readiness

7*24 hours and takeover of activities outside regular working hours Very good German and good English skills

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. JOBV1_EN