We are currently looking for a Medior System Engineer (Windows / Citrix) to join a team within a large international infrastructure environment.You will be responsible for the day-to-day operational management of Windows and Citrix server environments.This is an operational role — not an architect position.Key responsibilitiesProvide support for complex infrastructure incidentsInvestigate and resolve Windows & Citrix environment issuesEnsure stability, availability, and performance of server platformsDocument processes and technical proceduresWork closely with helpdesk and infrastructure teamsTechnical scope80% Windows Server (2016-2025)20% Citrix (Virtual Apps & Desktops, Delivery Controllers, Storefront, Workspace, Director, Studio, NetScaler)Good understanding of networking & security principlesNice to Have: Active Directory, VMware, SCCM/SCOM, Exchange, PowerShell, monitoring tools, Storage knowledge.Practical informationLocation: Brussels area (2-3 days onsite)Start: March 2026Long-term contract (yearly renewable)