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: 22.04.2026 on stepstone.de
Service Manager - Schwerpunkt IT-Security (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. STELLENKENNZIFFER: 2026055TUC
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Your tasks • Your profile • What we offer
End-to-end management for the customer's professional and commercial support (offerings, business cases, orders, projects, operation, billing, performance reporting) Service-Governance, SLA and KPI management over the entire service lifecycle incl. Performance of Service Reviews and Escalation Management Recognizing, evaluating and realizing sales and upselling potentials in close cooperation with sales Support of the sales team including professional support in the design, calculation, business cases, contract and performance certificates, as well as approval coordination Takeover of project management in more complex customer orders (Changes) Risk management in service operation incl. Assessment of service, security and compliance risks, and derivation of appropriate measures Knowledge, further development, optimization and perception of methods and procedures in OS service management
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 of service management Proven experience in project management and presales Very good customer-oriented, entrepreneurial thinking and acting, also at management level Professional, trustworthy and empathic appearance at CxO level Very pronounced analytical and conceptual thinking and a structured, systematic way of working Good business knowledge (creation of business cases, offer/product calculations etc.) Embossed presentation and moderation capabilities, negotiation skills ITIL Expert certification or comparable German and 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. .
Location
 | operational services GmbH & Co. KG | |
| Frankfurt am Main, Berlin, Dresden, Hamburg, Leinfelden-Echterdingen, München, Nürnberg | ||
| Germany |
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