SC-Cleared Enterprise Network Engineer (SDN/VXLAN)

Experis; Corsham; Hybrid; GBP 75,000 - 125,000; Full time

Job summary

Experis Austria is seeking an experienced Network Engineer for a high-profile programme delivering critical infrastructure within a secure environment in the UK. You will design, implement, and support enterprise network infrastructure across physical and virtual environments.

The role requires strong Cisco expertise, traversing leaf-spine, VXLAN, SDN, and secure networking, with a focus on reliable, scalable solutions and documentation.

Qualifications

• Strong experience in enterprise network engineering, including design, implementation, administration, and troubleshooting.
• Excellent understanding of IP networking fundamentals, including TCP/IP, Subnetting, Routing, Address Management.
• Hands-on experience configuring and supporting routing protocols, particularly OSPF, BGP.
• Advanced knowledge of enterprise networking equipment including Routers, Switches, Firewalls.
• Experience with enterprise networking technologies such as Cisco Nexus, Cisco IOS-XE, Leaf-Spine Architectures, VXLAN.
• Strong understanding of network security technologies including Firewalls, IDS/IPS, AAA Platforms, Secure Network Segmentation.
• Experience implementing and managing QoS policies and traffic optimisation techniques.
• Ability to produce and maintain technical documentation including LLDs, build guides, and operational procedures.
• Strong analytical and troubleshooting skills with a methodical approach to problem solving.
• Excellent communication and stakeholder management skills.
• Relevant industry certification such as CCNP Enterprise or Equivalent networking certification.
• Must hold, or be eligible to obtain, SC Clearance.

Responsibilities

• Design, implement, and support enterprise network infrastructure across physical and virtual environments.
• Configure and manage network devices including Routers, Switches, Firewalls.
• Deliver modern network architectures including Leaf-Spine networks, SDN, Virtualised networking platforms.
• Configure, maintain, and troubleshoot dynamic routing protocols including OSPF, BGP.
• Implement and support core network services including IP addressing, Subnetting, VLANs, QoS, Traffic management.
• Deploy and manage overlay networking technologies such as VXLAN.
• Implement secure networking solutions, including firewall policies, IDS/IPS, and secure communications.
• Support network integration, testing, validation, and commissioning activities.
• Produce and maintain technical documentation including LLDs, Build Guides, and Runbooks.
• Work with Service Management to troubleshoot incidents and improve stability.
• Contribute to automation and continuous improvement across the network estate.
• Ensure solutions align with programme standards and security policies.

Skills

Enterprise networking

IP networking fundamentals

Routing protocols

Network security

QoS

Technical documentation

Stakeholder management

SC Clearance

Cisco Nexus/IOS-XE

Education

CCNP Enterprise

Tools

JIRA

Confluence

VXLAN

Job description

Experis Austria is seeking an experienced Network Engineer for a high-profile programme delivering critical infrastructure within a secure environment in the UK. You will design, implement, and support enterprise network infrastructure across physical and virtual environments.

The role requires strong Cisco expertise, traversing leaf-spine, VXLAN, SDN, and secure networking, with a focus on reliable, scalable solutions and documentation.