System Administrator

Position: Senior system Administration

Location : Brussel, VLG

Contract Duration : 5 Months

Work Mode : Hybrid

Languages: English, French, Dutch

Overview :

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 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, Pearl, 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.

Fluent in French or Dutch, with good understanding of the other language.

· Good command of written and spoken technical English.