OHB Teledata GmbH ( www.ohb-teledata.de) is part of OHB DIGITAL and the OHB Group. We are one of the leading technology providers in the field of industrial control and automation systems for the rail transportation sector. As part of our commitment to a more sustainable future, our mission is to strengthen the competitiveness of rail transport through innovative, reliable, and economically efficient solutions for both regional and long-distance railway networks. To support our customers' most demanding projects, we develop, integrate, design, and implement advanced automation, energy distribution, communication, and digital infrastructure solutions that meet the evolving needs of modern mobility. Every day, we work on technologies that drive the future of rail infrastructure, including electrification, automation, digitalization, connectivity, and cybersecurity. Our automation, power distribution, and communication systems ensure the reliable and secure supply of energy and data to railway networks—even in highly demanding, high-frequency operating environments. At OHB Teledata, we are guided by our core values of courage, collaboration, trust, responsibility, and versatility. Become part of our mission and help shape the future of sustainable and intelligent rail infrastructure.

For permanent employment OHB Teledata GmbH in Gilching is looking for a

IT System Administrator - Critical Infrastructure (Rail) (m/f/d)

We are looking for an IT System Administrator to join our team and support the operation and further development of complex IT systems in a safety-critical rail environment. In this role, you will ensure the reliable operation, integration, and monitoring of IT and OT systems that are essential for the safe and efficient functioning of rail infrastructure.

Your Tasks

• Plan, operate, and maintain complex IT systems in a critical infrastructure environment with high availability requirements
• Ensure compliance with defined Service Level Agreements (SLAs) and internal quality standards
• Integrate and configure IT systems into existing and new infrastructures, with a strong focus on IT/OT security
• Monitor system performance and proactively identify and resolve issues
• Support the definition, implementation, and continuous improvement of operational processes and tools
• Create and maintain technical documentation for systems and processes
• Configure, parameterize, and test IT applications in line with operational and security requirements
  
  

Your Qualifications

• Completed vocational training as a Fachinformatiker:in, Elektroniker:in für Informations- und Systemtechnik, Techniker:in, or a comparable qualification
• Solid experience in the administration of Windows Server systems and Active Directory
• Good knowledge of network technologies (Network Layer, Link Layer, Physical Layer)
• Basic knowledge of IT/OT security and experience in critical infrastructure environments
• Experience with monitoring tools (e.g. CheckMK) is a plus
• Linux experience, preferably with Red Hat Enterprise Linux, is desirable
• Structured and analytical working style with a strong focus on problem-solving
• Good communication and teamwork skills, with the ability to work independently and take responsibility
• Business fluency in German is required. Good English skills are an advantage

Nice to Have

• Microsoft certifications (e.g. Microsoft Certified: Windows Server Hybrid Administrator, Azure Administrator)
• Experience in the rail, transportation, or energy sector
• Knowledge of relevant standards (e.g. IEC 62443)

We offer

A complete overview of our benefits and more details can be found here on our website

Become part of our international team and take your professional and personal development to a new level. Don't fulfil all the requirements? No problem - we are happy to receive applications with partial matches! We are looking forward to your application in German or English via our online tool.

OHB Teledata GmbH
Human Resources

Questions regarding this posting? Alfrida Paja is available under ­ ­career@ohb.de