Senior Network Security Engineer (H/F)

Fortil is an international engineering and technology consulting group. Operating with over 2,500 employees across 30 offices in 14 countries, we foster independence, entrepreneurial spirit, and the unlocking of individual potential.

Job Description

As part of our IT/OT team, you will contribute to projects including connectivity setup in new data centres, cloud security and integration, WAN modernization, and support for application teams. You will operate in both IT and OT environments, ensuring rigorous preparation and execution of changes while supporting colleagues across Belgium and Europe.

Your key missions will include:

• Deploying, maintaining, and supporting IT and OT systems across multiple sites.

• Operating and troubleshooting the full network stack, from LAN to WAN and data centres to cloud.

• Applying broad networking expertise including routing, switching, cloud technologies, and firewall management.

• Supporting 24/7 company operations in collaboration with ICT teams.

• Participating in automation efforts using Python and/or Ansible.

• Ensuring compliance with security standards and best practices.

Your Profile

• Bachelor’s degree in Computer Science or equivalent.

• Fluent in Dutch or French (mandatory) and English.

• Strong team player, autonomous, proactive, and collaborative.

• Valid driving license and willingness to travel to Belgian sites as required.

• Hands-on experience in both IT and OT environments.

Technical Skills

• In-depth firewall expertise, Checkpoint mandatory.

• Strong knowledge of routing and switching protocols: OSPF, ISIS, MST, etc.

• Experience with Cisco Wireless, Cisco ACI, SD-WAN, ASR, ISR, Catalyst, Nexus devices.

• Cloud technology experience (MS Azure preferred).

• Automation skills with Python and/or Ansible.

• Familiarity with TACACS, RADIUS, Zabbix, Elastic, and ISE.

• Knowledge of backend monitoring and NAC systems.

Why join Fortil?

At Fortil, we offer a stimulating environment that supports your professional growth:

• Exposure to high-impact IT/OT projects across Europe.

• Structured support for skill development and career progression.

• Opportunities for international collaboration.

• Inclusive policies promoting work-life balance and diversity.

Fortil promotes equality of opportunity. All positions are open to candidates regardless of gender, origin, or sexual orientation.