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We are looking for a Senior Windows Server Administrator to support a High-Performance Computing (HPC) environment. In this role, you’ll ensure the availability and performance of Windows-based infrastructure used by the CAT (Computer-Aided Testing) department, while collaborating with cross-functional IT teams and optimizing system operations. This is a hands-on position requiring strong troubleshooting, automation, and scripting skills in a hybrid Windows/Linux setup.
Job Responsibility:
Ensure high availability and performance of critical Windows Server infrastructure in an HPC environment
Install, configure, and manage Windows servers supporting CAE/CAT applications
Provide advanced troubleshooting and root-cause analysis for system- and application-level incidents
Implement and manage Windows Server updates, patching, and OS upgrades while minimizing downtime
Collaborate with the HPC/Linux team to ensure interoperability and performance optimization across hybrid environments
Manage user access rights, AD roles, group policies, and ensure alignment with compliance/security policies
Document issues, configurations, and solutions using Confluence, ITSM systems, or internal knowledge bases
Support application owners and end users by resolving infrastructure-related bottlenecks or integration issues
Leverage PowerShell and other scripting tools to automate system maintenance and monitoring tasks
Participate in "On Call" weekly shifts supporting off-hours and weekend activity
Automate the provisioning and configuration of large-scale infrastructure using platforms and tools like Red Hat Ansible (Chef/Puppet), Git-hub
Monitor Infrastructure health using existing solutions (Icinga or similar) and respond to hardware and software issues. Perform daily infrastructure changes
Support and maintain backup and disaster recovery solutions (Veeam, TSM) to ensure data integrity and availability
Requirements:
Strong Experience as a Windows Server Administrator in enterprise or HPC environments
Deep expertise in Windows Server (2016/2019/2022), including AD, DNS, DHCP, and GPOs
Solid PowerShell scripting skills for automation and system management
Experience working in or alongside HPC infrastructure and Linux systems (Red Hat/CentOS/Ubuntu) is a plus
Familiarity with backup & recovery solutions such as Veeam or IBM TSM
Experience with CAE/CAT applications is an advantage
Good understanding of virtualization (VMware/Hyper-V) and system performance tuning
Strong documentation skills
experience with Jira, Confluence, GitHub is a plus
Fluent in English (mandatory)
German language skills are an advantage
Nice to have:
Experience with CAE/CAT applications is an advantage
German language skills are an advantage
What we offer:
Training and Certifications: Access to continuous learning and career development opportunities
Flexible working environment
Competitive salary and benefits package
Reimbursement: Get a yearly fixed amount for reimbursement
Performance Bonus: Earn an annual performance bonus based on your achievements
Career Advancement: Explore numerous opportunities for professional growth and career advancement
Extra Vacation Days: Take advantage of additional vacation days to relax and recharge