Network Infrastructure Engineer (LAN/WAN, SD-WAN & Security)

Us3 Ltd; Amsterdam; On-site; EUR 70,000 - 100,000; Full time

Job summary

Us3 Ltd in Amsterdam is seeking an experienced Network Infrastructure Engineer to design, implement, secure, and maintain enterprise networks across LAN, WAN, WLAN, SD-WAN, and cloud environments. You will ensure high availability, performance, and security while supporting network transformation.

You will configure routers, switches, firewalls, VPNs, and load balancers; monitor performance and security; collaborate with infrastructure, cloud, and cybersecurity teams; and contribute to disaster

Qualifications

• Extensive hands-on experience with enterprise network infrastructure (LAN/WAN/WLAN/SD-WAN).
• Strong skills in routing, switching, firewalls, VPNs, and load balancers.
• Experience with Azure and AWS connectivity and hybrid cloud networking.
• Ability to perform root-cause analysis and troubleshooting.

Responsibilities

• Design, implement, and manage enterprise LAN/WAN/WLAN/SD-WAN infrastructure.
• Configure routers, switches, firewalls, VPNs, and security controls.
• Monitor performance, availability, and security; perform disaster recovery activities.
• Collaborate across infrastructure, cloud, and cybersecurity teams.
• Maintain technical documentation and ensure high-availability environments.

Skills

LAN/WAN/WLAN/SD-WAN

Routers & switches

Firewalls & VPNs

Network security controls

Azure/AWS connectivity

Documentation & collaboration

Tools

NAC

IDS/IPS

Firewall technologies

Job description

We are seeking an experienced Network Infrastructure Engineer to design, implement, secure, and maintain enterprise network environments. You will ensure high availability, performance, and security across LAN, WAN, WLAN, SD-WAN, cloud, and data centre infrastructure, while supporting network transformation and continuous improvement initiatives.

Key Responsibilities

• Design, implement, and manage enterprise LAN, WAN, WLAN, and SD-WAN infrastructure.
• Configure and maintain routers, switches, firewalls, load balancers, and VPN solutions.
• Monitor network performance, availability, and security, resolving complex issues through root cause analysis.
• Implement network security controls, access management, and compliance standards.
• Support Azure/AWS connectivity, hybrid cloud networking, and data centre environments.
• Deliver network upgrades, migrations, capacity planning, and disaster recovery activities.
• Collaborate with infrastructure, cloud, and cybersecurity teams to improve network resilience and scalability.
• Maintain technical documentation and recommend network performance improvements.
• Strong hands-on experience with enterprise network infrastructure, including LAN, WAN, WLAN, SD-WAN, routing, and switching.
• Practical experience configuring and managing routers, switches, firewalls, VPNs, and network security controls.
• Proven troubleshooting skills, including complex fault resolution and root cause analysis.
• Experience with network monitoring, performance optimisation, and high-availability environments.
• Understanding of network security, access control, and compliance requirements.
• Strong communication, documentation, and cross-functional collaboration skills.

Preferred Skills

• Experience with cloud networking across Microsoft Azure and/or AWS.
• Knowledge of hybrid cloud connectivity and data centre network architecture.
• Experience with Network Access Control (NAC), IDS/IPS, and advanced firewall technologies.
• Exposure to network automation, disaster recovery planning, and large-scale network migrations.
• Relevant certifications such as CCNP, CCIE, PCNSE, or equivalent.