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September 15, 2026
Cloud Systems Administrator (m/w/d)
Senior • On-site
39,000 - 66,000 EUR/yr
Dortmund, NW, Germany
Apply now
Quick Facts
Role: Cloud Systems Administrator (m/w/d)
Work model: 1 day remote work per week
Description
You will administer and optimize cloud and virtualization infrastructure across a multi-cloud setup, including VMware ESXi/vSphere and Microsoft 365. You will implement and monitor security policies, manage Windows Server and Windows domain infrastructure, and support 2nd/3rd-level incident troubleshooting. A hands-on, automation-focused role with documentation and internal trainings.
Responsibilities
Administer and maintain VMware ESXi hosts and vSphere environments
Manage and optimize Microsoft 365, including Entra ID, Exchange, Intune, and SharePoint
Implement and monitor security policies in multi-cloud environments
Manage Windows Server (2016/2019/2022) and Windows domain infrastructure with Active Directory, Group Policy, and DHCP; further develop network infrastructure (routers, switches, firewalls)
Administer Git repositories and CI/CD processes to automate development and deployment workflows
Provide active 2nd- and 3rd-level support and resolve complex IT issues
Create and maintain documentation and conduct trainings for internal specialist teams
Requirements
Minimum 3 years of professional experience in cloud infrastructure administration and DevOps environments
Proven experience in systems administration, especially Microsoft 365 and Windows domains
Expertise in network engineering (VLANs, VPNs, firewall basics), plus network monitoring and troubleshooting
Knowledge of IT security (e.g., MFA, patch management, Defender, security policies, system hardening)
Experience with monitoring, logging, and incident troubleshooting
Experience with cloud and virtualization technologies such as Microsoft 365, VMware ESXi, vSphere, Kubernetes, and Docker
Knowledge of automation and infrastructure management, especially with PowerShell
Agile mindset, solution-oriented thinking, teamwork, and hands-on mentality
Fluent German and English
Benefits
Meaningful work in a growing, future-oriented family business
Integrative culture focused on equal opportunities
Comprehensive onboarding with mentoring
Ongoing professional and personal development opportunities
Working model with one day remote work per week
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