Network & Security System Engineer

About the role

Jan De Nul Group is looking for an experienced Network & Security System Engineer to design, implement and maintain a global IT network that supports offices, construction sites and vessels worldwide. You will work in a fast‑paced, international environment where stability, performance and security are essential.

Key responsibilities

• Co‑design, deploy and maintain routing, switching and firewall solutions for local offices and global projects.
• Manage WAN, firewalls, security perimeters and switches across the worldwide infrastructure.
• Support ticket handling, provide ICT and network assistance to colleagues and ship‑board engineers.
• Upgrade, patch and monitor systems to ensure optimal performance and protection against threats.
• Collaborate with Technical Support Engineers and act as the final internal link in the ICT support process.

Required profile

• Bachelor’s degree in an ICT‑related field.
• Minimum 3 years of experience in network and security administration.
• Methodical, project‑oriented mindset with strong problem‑solving abilities.
• Effective communicator in both Dutch and English.

Required skills

• Hands‑on experience with Cisco and Aruba switches/routers.
• Proficiency with Fortinet and Palo Alto firewalls.
• Knowledge of F5 load balancers, SSL encryption and VPN technologies.
• Network monitoring and performance optimisation.

What we offer

• Opportunity to work on large‑scale, international infrastructure projects.
• Collaborative team environment with continuous learning.
• Competitive compensation and benefits package.