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September 16, 2026
System Engineer (Windows/Microsoft Infrastructure)
Mid • On-site
34,000 - 69,000 EUR/yr
Hannover, NI, Germany
Apply now
Quick Facts
Role: System Engineer (Windows/Microsoft Infrastructure)
Focus: On-prem Microsoft server and infrastructure management
Description
Implement, configure, and maintain Microsoft Windows Servers, MS Exchange, and related infrastructure services in medium-sized client and network management environments. Maintain and optimize system environments, manage Active Directory and GPO structures, and ensure smooth 2nd/3rd level operations. Plan and execute changes, run vulnerability scans, analyze monitoring alerts, troubleshoot proactively, and keep operational/process/system documentation current.
Responsibilities
Implement, configure, and maintain Windows Server, Exchange, and additional infrastructure services (e.g., Veeam backup, Trend Micro)
Maintain, develop, optimize, and document system environments
Administer Active Directory and GPO structures
Ensure reliable operation of the IT infrastructure in the Microsoft environment, including 2nd/3rd level ticket handling
Plan, prepare, and conduct changes
Perform small independent tasks or work in teams on projects in medium-sized environments
Run regular vulnerability scans across the entire IT infrastructure (analyze, assess, recommend, remediate)
Analyze monitoring alerts and perform proactive error resolution
Create and maintain operational, process, and system documentation
Perform patch and update management (analyze, assess, recommend, remediate)
Requirements
Training as IT specialist for systems integration or an IT degree or comparable qualification
Experience installing and configuring on-prem Microsoft components: Windows Server (2012 R2 and newer), Exchange Server, SQL Server, Active Directory
Experience with infrastructure services: ADFS, DHCP, DNS, NTP, Radius, IIS, SMB, SNMP
Optional: experience with Microsoft cloud services
Relevant certifications (e.g., MCSA Windows Server 2016 or higher; Microsoft 365 Certified: Enterprise Administrator Expert)
Benefits
Flexible working hours and mobile office by agreement
Corporate benefits portal discounts, bike leasing, and free drinks & fruit
Training and further education opportunities
Employee events
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