Senior System Administrator

Directorate of Special Units – National Technical & Tactical Support Unit

Startdate: ASAP

Working environment

The Directorate of Special Units of the Federal Police (DSU) is a highly specialized support unit that provides and/or implements specialist support, tactics and techniques for the local and federal police. The DSU focuses on serious organized crime and the activities of terrorist and extremist groups. DSU is a police service that can be deployed throughout Belgium and abroad if necessary.

The NTSU (National Technical & Tactical Support Unit) is part of the Special Units of the Federal Judicial Police. It is primarily responsible for preparing and carrying out discreet placements of equipment as part of special search methods and in crisis situations. Within the NTSU, the CTIF (Central Technical Interception Facility) is responsible for real-time interception and observation of telecommunications. CTIF has the necessary infrastructure to carry out its missions and is also developing its own solutions to make telecommunications interception more effective in the future.

You’ll be joining a dynamic, passionate team where the exceptional is every day’s reality: the resources, systems and technologies legally reserved for police and intelligence services are our working tools in judicial investigations.

Job description

We are looking for a skilled and motivated Senior System Administrator to lead the development and evolution of the organisation’s software and systems infrastructure. As a Senior System Administrator, you will work together with the team while ensuring the reliability, performance, and modernisation of server environments. You will work within a bilingual, interdisciplinary team and collaborate closely with experts in telecommunications interception, infrastructure engineering, and IT operations. Your mission will be to:

Responsibilities:

Systems Engineering & Infrastructure Management

• Administer and maintain server environments (Windows/Linux).
• Manage Active Directory, GPO, DNS, DHCP.
• Monitor and optimise virtualised environments (VMware, Proxmox, Hyper-V).
• Ensure system security, patching, backups, and business continuity.
• Contribute to the design and evolution of robust, scalable system architectures.
• Automate recurring tasks using scripting tools (Python, Powershell, Perl, Ansible).
• Collaborate with network, security, and support teams to ensure end-to-end system reliability.

Operational Excellence & Collaboration

• Diagnose and resolve complex technical issues (software or system-related).
• Take ownership of assigned tasks, assess risks, and escalate when needed.
• Document infrastructure, processes, and application components.
• Work effectively in a multilingual, interdisciplinary environment.
• Contribute as a team player while being fully capable of working independently.

Required experience:

• Minimum 7 years of experience in system administration (Windows and Linux).
• Solid skills in virtualisation, storage, and security.
• Knowledge of cloud environments (Azure, AWS) is a plus.
• Scripting skills (PowerShell, Bash, Python or equivalent).
• Understanding of infrastructure components (network, security, identity management).

Soft Skills and Professional qualities

• Bachelor’s or master’s degree in IT, or equivalent professional experience.
• Strong analytical mindset with a focus on continuous improvement.
• Pragmatic, solution-oriented approach to technical challenges.
• Curious, proactive, and eager to learn and explore new technologies.
• Excellent communication skills, able to present complex information clearly.
• Discrete, stress-resistant, and reliable in critical environments.
• Fluent in French or Dutch, with good understanding of the other language.
• Good command of written and spoken technical English.

A ‘TOP SECRET’ level security clearance is required for this position as referred to in the law of 11/12/1998 on classification, security clearances, attestations and notices.

Location: Caserne de Witte de Haelen (Etterbeek)