Network Security Engineer – BrusselsKey Responsibilities:Handle service requests related to network operations.Provide 2nd level incident response, escalating to vendors when needed.Conduct root cause analysis and contribute to problem management and continuous improvement.Support lifecycle management of network services to maintain efficiency and compliance.Assist in the design and implementation of new network services and solutions.Manage configuration changes and ensure documentation is kept up to date.Design and implement network management systems and other operational tools:Define architecture and evaluate market solutions.Conduct proof-of-concept and pre-production testing.Migrate new systems into production.Define operational procedures and automate routine tasks.Develop and configure custom tools (e.g., web dashboards, databases, automation scripts).Evaluate quality and efficiency of network operations using metrics and monitoring.Regularly monitor and analyze network performance, proposing quality improvements.Required Skills & Experience:Proven experience in large-scale network operations.Strong knowledge of incident management, request fulfillment, and problem resolution.Hands-on experience with configuration management in enterprise networks.Familiarity with network management and monitoring tools.Solid understanding of routing & switching technologies:BGP, OSPF, VLAN, VPNs, MPLS, etc.Experience with firewall policies and security best practices:Cisco ASA, Check Point, FortiGate.Knowledge of automation and scripting:Python, Ansible, Terraform (preferred).Understanding of network performance monitoring and troubleshooting methodologies.Experience working in multi-vendor environments:Cisco, Juniper, Fortinet, etc.Strong analytical skills and ability to contribute to service improvements.Bachelor’s/Master’s degree in Computer Science, Networks, or Telecommunications.Relevant networking certification (e.g., CCNA, CCNP, NSE4, or equivalent) preferred.Fluency in English (C1/C2 level) is required.Preferred Skills (Nice to Have):Network automation tools experience.Knowledge of cloud networking (AWS, Azure, Hybrid-Cloud).Understanding of container networking (Kubernetes, Docker).Experience with network telemetry and monitoring.Exposure to SDN and network virtualization (NSX, Cisco ACI).Additional Requirements:Must be resident in Belgium or willing to relocate.