Senior Network & Security Engineer - Hybrid Freelance

CDH Professionals; Brussel Hoofdstad; Hybride; EUR 70 000 - 100 000; Temps partiel

Résumé du poste

CDH Professionals are seeking a Senior Network and Security Engineer to ensure the stability, security, and scalability of our IT infrastructure. You will oversee critical systems, provide expert support, and contribute to the continuous improvement of our network and security landscape.

The role requires 7+ years in IT with strong routing, firewall and security tooling expertise, and a hands-on approach to governance and optimization.

Qualifications

• Bachelor's/Master’s in a technology field or equivalent experience.
• 7+ years in IT, including 5 in networking/security.
• Expertise in routing (BGP, OSPF), MPLS, QoS, and DC LAN tech.
• Hands‑on experience with firewalls (Checkpoint, Palo Alto), proxies (Zscaler/ZPA), DNS, and load balancing.
• Familiarity with tools like Splunk, Cisco ISE, Infoblox, and SDWAN/SASE.
• Strong troubleshooting skills and understanding of IT processes.

Responsabilités

• Ensure uptime and performance of IT infrastructure (WAN, LAN, WLAN, VPN, DNS, FW, DC, etc.) per SLAs.
• Manage second- and third-line support tickets, assisting first-line as needed.
• Validate and deploy infrastructure/network deliverables, adhering to standards and governance principles.
• Participate in change management processes, ensuring smooth transitions without operational impact.
• Propose and implement network and security improvements, including HLD/LLD solutions.
• Monitor firewalls, networks, and systems; manage third‑party collaboration for issue resolution.
• Contribute to RFI/RFP preparation and version control of systems.

Connaissances

7+ years IT experience

Networking

Security

Routing (BGP, OSPF)

MPLS

QoS

DC LAN tech

Firewalls (Check Point, Palo Alto)

Proxies (Zscaler/ZPA)

DNS

Load balancing

Splunk

Cisco ISE

Infoblox

SDWAN/SASE

Formation

Bachelor's/Master’s in technology or equivalent experience

Outils

Splunk

Cisco ISE

Infoblox

SDWAN/SASE

Zscaler/ZPA

Check Point

Palo Alto

Description du poste

CDH Professionals are seeking a Senior Network and Security Engineer to ensure the stability, security, and scalability of our IT infrastructure. You will oversee critical systems, provide expert support, and contribute to the continuous improvement of our network and security landscape.

The role requires 7+ years in IT with strong routing, firewall and security tooling expertise, and a hands-on approach to governance and optimization.