Senior Network Engineer: Enterprise Networking & Security

Getronics; United Kingdom; On-site; GBP 75,000 - 110,000; Full time

Job summary

Getronics in the United Kingdom is seeking a highly skilled Senior Network Engineer to design, implement and optimize complex enterprise networks using Cisco Routing & Switching, Wireless networking, and VMware NSX.

You will work across LAN, WAN, and Data Center environments to ensure high availability, security, and performance, while mentoring junior engineers and collaborating with cross-functional teams on infrastructure projects.

Qualifications

• Minimum 7 years of hands-on experience in Cisco Routing & Switching, with expert-level knowledge of Cisco Catalyst and Cisco Nexus switches.
• Minimum 4 years of hands-on implementation experience in enterprise Wireless Networking.
• Minimum 5 years of hands-on experience with VMware NSX, including Distributed Firewall (DFW).
• Strong understanding of enterprise firewall technologies and security best practices.

Responsibilities

• Design, implement, and support enterprise network infrastructure using Cisco Catalyst and Nexus platforms.
• Configure, maintain, and troubleshoot Routing & Switching technologies in complex enterprise environments.
• Plan, deploy, and support enterprise wireless network solutions.
• Implement and manage VMware NSX, including Distributed Firewall (DFW) and security policies.
• Configure and maintain firewall policies to ensure network security and compliance.
• Support network optimization, capacity planning, and performance tuning.
• Troubleshoot and resolve complex network issues across LAN, WAN, Wireless, and Data Center environments.
• Collaborate with cross-functional teams on infrastructure projects, migrations, and technology upgrades.
• Participate in change management, incident management, and root cause analysis.
• Maintain network documentation, architecture diagrams, and standard operating procedures.
• Provide technical guidance and support to junior engineers and operations teams.

Skills

Cisco Routing & Switching

Wireless Networking

VMware NSX

Network Security

DNS concepts

SD-WAN

Tools

Cisco Catalyst

Cisco Nexus

NSX

Job description

Getronics in the United Kingdom is seeking a highly skilled Senior Network Engineer to design, implement and optimize complex enterprise networks using Cisco Routing & Switching, Wireless networking, and VMware NSX.

You will work across LAN, WAN, and Data Center environments to ensure high availability, security, and performance, while mentoring junior engineers and collaborating with cross-functional teams on infrastructure projects.