Senior ICT Network Engineer 📍 Location: Leuven, Belgium (3 days onsite per week)📅 Start Date: 15 June 2026 - long-term with extension possible🌍 Language: English fluentAbout the OpportunityWe are currently seeking an experienced Senior ICT Network Engineer to join a leading technology organization in Leuven for a long-term assignment. This role offers the opportunity to work on large-scale enterprise network environments spanning campus, data center, and cloud infrastructures.As a key member of the infrastructure team, you will contribute to the design, implementation, optimization, and transformation of mission-critical networking solutions, ensuring high levels of availability, security, and performance.Key ResponsibilitiesDesign, implement, and maintain enterprise network infrastructures across campus, data center, and cloud environmentsManage routing, switching, wireless, and firewall solutionsMonitor, analyze, and optimize network performance and reliabilityTroubleshoot and resolve complex network issuesExecute lifecycle management activities, including upgrades, migrations, standardization initiatives, and technology renewalsSupport infrastructure transformation projects and new site deploymentsCollaborate closely with security, infrastructure, and project teamsContribute to network automation initiatives and operational improvementsMaintain technical documentation and disaster recovery proceduresStrengthen security controls and support continuous process improvementRequired ExperienceMinimum 5 years of experience in enterprise networking environmentsStrong expertise in routing & switching and wireless networkingProven experience with network monitoring, troubleshooting and performance optimizationSolid understanding of network security principles: segmentation, firewall, Access control and Zero TrustTechnical SkillsExperience with cloud networking technologiesKnowledge of core network services: DNS, DHCP, IPAM, AAA, NACExperience with network automation is considered a strong assetKnowledge of IT/OT networking environments (Purdue Model and IEC 62443) is a plusSoft SkillsStrong analytical and problem-solving skillsExcellent communication and collaboration abilitiesComfortable working in complex, multidisciplinary environmentsProactive mindset with a focus on continuous improvement and operational excellence