Senior Network Security Engineer
Brussels, BelgiumFull-time | Hybrid (On-site presence required)Contract – 9 months
Responsible for securing and optimizing enterprise network infrastructure within a complex IT environment. The role focuses on network security architecture, automation, incident management, and operational support, ensuring the protection of critical systems against cyber threats.
Key Responsibilities
Network Security Architecture
Designed and implemented network security strategies to protect infrastructure from cyber threats and unauthorized access.
Configured and maintained firewalls, VPNs, proxies, and load balancers.
Implemented Zero Trust Network Access (ZTNA) concepts to strengthen secure access to systems.
Network Monitoring & Incident Management
Continuously monitored network environments to detect, analyze, and respond to security incidents.
Conducted security audits and vulnerability assessments.
Diagnosed and resolved complex network security and performance issues.
Automation & Infrastructure Optimization
Designed and deployed network automation solutions.
Developed and maintained Ansible playbooks to automate operational processes.
Implemented scripting solutions to improve operational efficiency and security operations.
Technical Leadership & Collaboration
Provided advanced technical support and guidance to internal network teams.
Coached and mentored engineers within the network team.
Collaborated with cross-functional teams to resolve incidents and implement security improvements.
Created and maintained security processes and documentation aligned with NIS2 compliance requirements.
Technologies & Tools
Network & Routing: TCP/IP, MPLS, IP Routing, Switching, WiFi
Security: Firewalls, VPN, WAF, Proxy (forward & reverse), ZTNA
Cloud Networking: Azure, ExpressRoute
Automation: Ansible, scripting
Network Monitoring & Troubleshooting: Wireshark
Security Management: AlgoSec, Netskope
Infrastructure: DNS, ISP connectivity, TACACS
Load Balancing & Network Performance Management
Certifications (Preferred)
Security+ or other relevant network security certifications
Languages
French or Dutch (excellent)
Second national language (good knowledge preferred)
English (professional working proficiency)
Soft Skills
Strong problem-solving and analytical abilities
Clear communication of complex technical concepts
Leadership and mentoring capabilities
Ability to manage multiple priorities and projects
Adaptability in fast-changing security environments
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