ZEISS | Germany | 81xxx, 73xxx, 07xxx, 80xxx Jena, Oberkochen (Baden-Württemberg), München | Permanent position | Full time | Published since: 29.12.2025 on stepstone.de
Service Cluster Manager Microsoft 365 Messaging und Voice (m/f/d)
Trust something new, grow beyond itself and redefine the boundaries of the feasible. That is exactly what our employees can and should live daily. To make a sign with our innovations and to enable great. Because there are a lot of fascinating people behind every successful company. In an open and modern environment with numerous development and further training opportunities, ZEISS employees work in a culture characterised by expert knowledge and team spirit. All this is supported by the special ownership structure and the long-term goal of the Carl-Zeiss Foundation: to advance science and society together. Today dare. Inspire tomorrow. Diversity is part of ZEISS. We look forward to your application regardless of gender, nationality, ethnic and social origin, religion, world view, disability, age as well as sexual orientation and identity. Apply in less than 10 minutes. .
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Your tasks • Your profile • What we offer
The Corporate IT (CIT) of Carl Zeiss AG is responsible for IT for all business areas of ZEISS. The diversity of the ZEISS portfolio has an exciting complexity. This is why we are looking for a Service Cluster Manager Microsoft 365 Messaging and Voice (m/w/x). Your duties End‐to-end responsibility for Microsoft 365 Messaging & Voice Services including Tenant-Administration (Exchange Online, Teams Voice, Security & Compliance)
Management and optimization of M365 Policies (e.g. Conditional Access, DLP, MFA) and license management
Ensuring compliance & governance (audit, ISO, ITGC) and implementing Security‐Best‐Practices
Monitoring & Reporting on Microsoft 365 Admin Center, PowerShell and, if applicable, Third tools
Technical management and control of a four-member team in the field of Microsoft 365 Messaging & Voice
Technical and organizational support of Merger & Acquisitions in the field of mail and telephony – incl. Integration and elimination of services from and into the Micorsoft 365 Tenant
ITIL-based service management including incident, problem, change and service request management for Microsoft 365 communication services
Development and strategic orientation of Micorsoft 365 Messaging & Voice Services
Application of Encryption Services for Exchange to Ensure Confidential Communication
Patch Management for messaging and voice components in Microsoft 365 environment
Monitoring of service quality based on defined KPIs and controlling external providers to ensure agreed SLAs
Global operation of services and rollout to new locations
Control and coordination of different external providers
Deep know-how in Microsoft 365 Administration (Exchange Online, Teams Voice, Azure AD) and relevant professional experience in the relevant field
Studies in Business Informatics or Similar
Experience with PowerShell automation for Microsoft 365 services
Knowledge of Security & Compliance features (e.g. Purview, Conditional Access, MFA)
Experience in the application of ITIL processes in operational operation
Expertise in encryption technologies for Exchange and Microsoft 365
Experience in managing external service providers and in KPI-based quality management
Certifications such as MS‐102 (Microsoft 365 Administrator), MS‐700 (Teams Admin), SC‐300 (Identity & Access)
ITIL Foundation or higher quality ITIL certifications
Experience with telephony technologies desirable
Location
 | ZEISS | |
| Jena, Oberkochen (Baden-Württemberg), München | ||
| Germany |
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