Network Security Engineer

About the job

Freelance Network Security Engineer

Contract: Freelance / ZZP

Duration: 6 month initial freelance contract, with possible extension

Location: Utrecht, Netherlands

Working arrangement: Hybrid / On-site

Start: ASAP

About the Role:

We are looking for an experienced Freelance Network Security Engineer to support an organisation in Utrecht with the management, maintenance and optimisation of its network and security infrastructure.

This is a hands-on technical role suited to a Network Security Engineer who is comfortable working across enterprise networking, firewalls, VPNs and network security technologies. You will be responsible for maintaining a secure and reliable network environment while supporting infrastructure improvements and troubleshooting complex technical issues.

Responsibilities:

• Manage, maintain and troubleshoot network and security infrastructure.
• Configure and manage enterprise firewalls and security appliances.
• Manage LAN/WAN infrastructure, routing and switching.
• Configure and maintain VPN solutions.
• Manage VLANs, network segmentation and access controls.
• Monitor network performance, availability and security.
• Troubleshoot complex network connectivity and security issues.
• Investigate network security events and potential vulnerabilities.
• Perform firewall rule changes, security configuration and maintenance.
• Support network upgrades, migrations and infrastructure projects.
• Identify opportunities to improve network security, performance and reliability.
• Work closely with infrastructure, cloud and cybersecurity teams.
• Maintain accurate network documentation and technical procedures.

Requirements:

• 5+ years of experience as a Network Engineer, Network Security Engineer or Infrastructure Engineer.
• Strong knowledge of TCP/IP, DNS, DHCP, VLANs and VPNs.
• Hands-on experience with enterprise firewalls such as Fortinet, Palo Alto or Cisco.
• Strong understanding of routing and switching.
• Experience with OSPF and/or BGP.
• Experience with network security, segmentation and access controls.
• Experience with network monitoring and troubleshooting.
• Knowledge of IDS/IPS and general network security principles.
• Experience working within enterprise IT environments.
• Strong problem-solving and communication skills.
• Comfortable working independently in a freelance environment.
• Available to work in or around Utrecht.

Ideal Profile:

• Hands-on and technically strong Network Security Engineer.
• Strong troubleshooting and analytical skills.
• Security-focused with a proactive approach to identifying and resolving issues.
• Comfortable working independently and taking ownership of technical tasks.
• Strong communication skills and able to work with multiple technical teams.
• Experience working in complex enterprise network environments.
• Available at short notice or with a short notice period.

Contract Details:

• Freelance / ZZP contract
• Initial 6 month contract
• Hybrid role: combination of on-site work in Utrecht and remote working
• Full-time assignment
• Competitive freelance rate, depending on experience
• English-speaking working environment
• ASAP start preferred