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Phoenix Technologies

Brussel / Global

F5 Networking and Security Engineer

Job Description

We are seeking an experienced F5 Networking and Security Engineer to join our team. In this role you will design, implement, and manage F5 BIG‑IP solutions for application delivery and network traffic management.

Key Responsibilities

  • Design and architect load balancing and high‑availability solutions.
  • Configure and administer virtual servers, pools, nodes, monitors, iRules, SSL profiles, and traffic policies.
  • Manage SSL/TLS certificates, SSL offloading, and traffic inspection.
  • Deploy and maintain Web Application Firewall (WAF) and Access Policy Manager (APM) services.
  • Perform performance tuning, capacity planning, and service optimization.
  • Provide incident, problem, and change management support.
  • Execute security patching, software upgrades, and lifecycle management of F5 infrastructure.
  • Analyze root cause of application delivery, connectivity, and performance issues, and produce documentation.

Required Qualifications

  • Bachelor’s or master’s degree in electronics, ICT, or telecommunications, or equivalent technical experience.
  • In‑depth conceptual and operational knowledge of IP networks in multi‑site data centre environments.
  • Advanced expertise in F5 solutions, including design and implementation in complex environments.
  • Strong understanding of IT security concepts and architectures, including experience with Checkpoint and Palo Alto firewalls.
  • Excellent communication skills and ability to work independently and methodically.
  • Fluency in Dutch, French, and English.

Nice to have

  • Experience with automated scripting for F5 configuration management.
  • Knowledge of network traffic analysis and monitoring tools.

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