IT System Administrator / IT System Engineer – Mission Operations

  • Gelsdorf, Germany
  • German & English
  • Space
  • + 5 years
  • 60 000 - 70 000 €

About the Company

Our client is a leading European space and aerospace technology group developing and operating advanced satellite systems, ground segment infrastructure, and mission-critical space technologies for institutional and commercial customers.

The company provides solutions across satellite operations, ground systems, Earth observation, secure data processing, antennas, telescopes, and mechatronic systems.

Its teams contribute to complex European space programs where operational reliability, technical excellence, and secure mission execution are critical.

The Role

We are looking for an experienced IT System Administrator / IT System Engineer to join the Mission Operations team in Gelsdorf, Germany.

In this role, you will work at the intersection of IT infrastructure and satellite mission operations, helping ensure the reliable operation of complex, mission-critical systems.

You will be responsible for the administration and maintenance of IT environments supporting mission operations, including server and storage infrastructure, Microsoft environments, databases, and virtualized systems.

Working closely with system engineers, software developers, and national and international partners, you will contribute to the availability, security, and continuous operation of the infrastructure behind demanding space missions.

Your Responsibilities

  • Carry out mission operations in collaboration with national and international partners
  • Administer and maintain the IT systems and components supporting mission operations
  • Ensure the continuity and availability of mission-critical systems through fault detection, analysis, and troubleshooting
  • Plan, install, configure, and administer server and storage systems
  • Support the procurement and selection of IT hardware and components
  • Plan and conduct requirements analyses for ground-system hardware
  • Implement system and configuration requirements
  • Support testing and acceptance activities, both internally and, where required, at customer sites
  • Provide technical IT support to system engineers and software developers
  • Train and support users
  • Contribute to the reliable and secure operation of complex IT environments

Your Profile

  • Completed vocational training as an IT Specialist (Fachinformatiker), a degree in Computer Science, or a comparable technical qualification
  • Professional experience as an IT System Administrator, IT System Engineer, or in a comparable infrastructure role
  • Experience designing, implementing, or operating high-availability IT systems
  • Experience working with complex IT environments is highly desirable
  • Strong working knowledge of Microsoft operating systems, databases, and VMware
  • Knowledge of Unix/Linux is an advantage
  • Experience or knowledge in IT security is also an advantage
  • Strong troubleshooting and analytical skills
  • Motivation and ability to quickly understand new technologies and complex IT systems
  • Structured and responsible approach to working with business-critical infrastructure
  • Strong team-working and communication skills
  • Fluent German and very good English skills

What’s Offered

  • Opportunity to work on advanced European satellite and space missions
  • Hands-on responsibility for mission-critical IT infrastructure
  • Work with complex, high-availability systems supporting real-world satellite operations
  • Collaboration with multidisciplinary engineering and mission teams
  • Flexible working hours
  • 30 days of annual leave, additional special leave, and sabbatical options
  • Structured onboarding process with dedicated buddy support
  • Extensive training opportunities and individual career development
  • Long-term opportunity within a highly technical and internationally oriented space environment

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For more than ten years, I’ve been driven by one idea — the future of Space and Defense depends on the people behind it. My career began in technical recruitment, where I had the privilege to hire engineers designing cutting-edge systems for aerospace and advanced manufacturing.

Co-founding Demexios was a natural next step: a way to transform my industry knowledge and relationships into a dedicated structure that helps clients recruit faster, smarter, and with strategic alignment.
Over time, I built long-term partnerships with companies leading technological sovereignty — from NewSpace startups developing electric propulsion to defense integrators modernizing tactical and surveillance systems. These collaborations allowed me to form a powerful network of decision-makers, project leaders, and experts who now trust Demexios to deliver when precision truly matters.
Today, my role is not just to connect candidates and companies — it’s to ensure that every hire strengthens our clients projects.

I’ve built my career in sales and recruitment across several industries space, tech, healthcare, and defense. I’ve always been drawn to innovation and the talented people who turn ideas into reality. Over the years, I’ve learned how much a motivated and skilled team can define a company’s success and how the right people will shape the future of the New Space and defense industries.

My international background has allowed me to work with both startups and global organizations, helping them identify individuals who truly fit their culture and business goals. This combination of experience in technology and talent acquisition naturally led to the creation of Demexios.

At Demexios, our mission is simple: to connect experts with the companies that need their skills particularly in the defense and space sectors. I firmly believe that no ambitious project can succeed without a skilled and cohesive team driving it forward.

My commitment is to be a trusted partner for our clients, supporting them step by step in building strong, high-performing teams that deliver tangible results whether their ambitions lie on Earth or beyond.