An established organization in the critical infrastructure sector is looking for an experienced F5 Network & Security Engineer to support and further develop its enterprise data center and network security environment.

The successful consultant will work within a highly skilled networking team responsible for large-scale IP networks, data center connectivity, application delivery, and network security infrastructure in a complex multi-site environment.

Responsibilities

The service includes the following tasks:

Load balancing and high-availability architecture design.
Design and implementation of F5 BIG-IP solutions for application delivery and network traffic management.
Configuration and administration of virtual servers, pools, nodes, monitors, iRules, SSL profiles, and traffic policies.
SSL/TLS certificate management, SSL offloading, encryption configuration, traffic inspection and reporting.
Web Application Firewall (AWAF) deployment and policy management.
Authentication and access management integration using APM and enterprise identity services.
Performance tuning, capacity planning, and service optimization.
Incident, problem, and change management support.
Security patching, software upgrades, and lifecycle management of the F5 infrastructure.
Root cause analysis and troubleshooting of application delivery, connectivity, and performance issues.
Documentation, operational procedures, and knowledge transfer activities to stakeholders.

Requirements

Bachelor's or Master's degree in Electronics, ICT, Telecommunications, or equivalent technical experience.
Extensive conceptual, practical, and operational knowledge of IP networks and their management in multi-site environments and data centers.
Advanced knowledge of F5 BIG-IP solutions with proven experience designing and implementing complex environments.
Broad knowledge and practical experience with IT security concepts, architectures, and implementations (e.g. enterprise firewall technologies).
Willingness to continuously expand and deepen technical expertise.
Ability to work independently, methodically, and responsibly while accurately assessing risks.
Customer-oriented mindset with the ability to perform well under pressure.
Flexible and adaptable to changing operational priorities.
Strong communication skills for collaboration with colleagues, departments, suppliers, and service providers.
Fluency in Dutch, French, and English (spoken and written).

Project Details

Workload: 40 hours per week
Location: Brussels, Belgium
Remote: 60%
Start Date: 01 September 2026
End Date: 31 December 2026
Duration: 4 months

Next Steps

If the application process provides an option to send an email or a comparable notification, please activate it so that we can remain in contact with you.

After submitting your application, you will automatically receive an application link for the next steps in the process.

Please apply only if you are professionally qualified for the position and your rate expectations are suitable for the project.

We look forward to receiving your application.

Your team at joyIT.