Windows System Administrator

Windows System Administrator Full Time (40 h/w) Klosterneuburg near Vienna, Austria / Home Office possible EUR 54,000* gross/year ISTA is growing. Grow with us! Institute of Science and Technology Austria (ISTA) is a constantly growing international institute for conducting world-class research in mathematics, computer science, life sciences & physical sciences. We strive to recruit passionate professionals from across the world over all fields who strive to support our goal of excellent research. Located within a beautiful campus on the outskirts of Vienna, we offer multiple opportunities for personal growth in a stable working environment. Get an insight! Your responsibilities Excellent research needs state-of-the-art IT infrastructure and innovative digital services. With a team of about 50 experts, we will redesign the institute's digital landscape over the next few years and implement an ambitious digital transformation programme to facilitate the Institute's rapid growth. As part of our IT & Digital Transformation strategy, we are planning to migrate parts of our Windows-based infrastructure to the cloud and introduce Microsoft 365. As part of our core IT infrastructure team, you will have a leading role in designing, implementing, and operating our Windows-based systems. Your responsibilities in our fast-changing environment include: * Designing, planning, implementing, maintaining, and operating Windows-based systems * Configuring and maintaining services such as Active Directory, Microsoft Exchange, and MS SQL Server * Planning, implementing, and optimising server automation, e.g., for updates and configuration management * Implementing security features and hardening measures, aligned with our CISO and the cybersecurity team * Providing 2nd and 3rd-level support to identify, troubleshoot, and resolve incidents * Documenting the system architecture, configuration of the servers and applications as well as providing end-user documentation Your profile * Several years of experience as Windows system administrator, ideally with servers on-premises, Azure-based workloads, and Microsoft 365 * Profound knowledge of Windows server operating systems and Active Directory * Experience with configuring and operating Azure, Entra ID, and Microsoft 365 * Experience with VMware, container technologies, and orchestration is a plus * Knowledge of typical network technologies including TCP/IP, DHCP, DNS, routing, and switching * Experience with automation tools and scripting languages like PowerShell * General knowledge of state-of-the-art server architecture, operating models, and security features * Used to work with IT service management and IT security frameworks (ITIL, ISO 27001, ) * Working language is English, good working knowledge in German is an advantage Apply now Your benefits * Education & training * Cafeteria * Childcare * Free shuttle bus * Multiple health offers * Pension insurance This position comes with possible overpayment depending on education, qualification and work experience. ISTA processes your personal data in accordance with the law. For more information, please refer to ww www.ista.ac.at/data-protection. Am Campus 1, 3400 Klosterneuburg, Austria Tel.: 43 (0) 2243 9000-0 www.ista.ac.at

Location: Klosterneuburg,, AT

Posted Date: 11/12/2025