Senior ICT Network Engineer Apply promptly! A high volume of applicants is expected for the role as detailed below, do not wait to send your CV.Initial 1 year contract (freelance) + possibility of extensionLeuven, Belgium (3 days onsite/week)ASAP start40 hours/weekThe assignmentDesign, implement, and maintain campus, datacenter, cloud, and security network infrastructure, including routing, switching, wireless networking, and firewalling solutions.Monitor, troubleshoot, and optimize network services and performance to ensure high availability, security, and operational continuity across enterprise and research environments.Execute lifecycle management activities such as upgrades, migrations, standardization, and technology refreshes while supporting infrastructure transformation programs and new site deployments.Collaborate with security, infrastructure, and project teams to design and implement network architectures aligned with business, operational, and compliance requirements.Contribute to network automation, documentation, disaster recovery preparedness, and the continuous improvement of operational processes, standards, and security controls.Required knowledge and skillsMinimum 5 years of experience in designing, operating, and supporting enterprise network environments, with strong expertise in routing, switching, and wireless networking.Solid knowledge of network security concepts, including segmentation, firewalling, access control, and zero trust architectures.Hands-on experience with network monitoring, troubleshooting, traffic analysis, and performance optimization in complex environments.Familiarity with cloud networking technologies and core network services such as DNS, DHCP, IPAM, AAA, and NAC.Strong analytical, problem-solving, and communication skills, with the ability to collaborate effectively across multidisciplinary teams; experience with networkautomation and IT/OT networking (e.G., Purdue Model, IEC 62443) is considered an asset. xdkqlui English is a must.