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Senior Core Network Engineer

Oscar — United Kingdom · Posted ~2 hours ago

Senior Contract Hybrid £465/day

Skills

Cisco networking core networking routing switching network automation infrastructure migration Cisco Cisco NSO

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Summary ✨ AI‑Generated

A contract opportunity for an experienced network engineer to design, optimize, and transform enterprise-scale core network environments. The role includes automation, migration planning, and technical leadership.

Highlights

Senior infrastructure role working on large-scale network transformation projects with strong focus on automation, architecture, and enterprise environments.

Description

Senior Core Network Engineer | 6 months initially | 2 days on site | London, Chester or Bromley | £465 p/d | Inside IR35 We're seeking an experienced Senior Core Network Engineer to support the evolution of a large-scale enterprise network. This role would suit an engineer with extensive experience in Cisco core networking technologies, network automation, and delivering large-scale infrastructure projects within enterprise or service provider environments. What You'll Be Doing Design, implement and optimise large-scale core network infrastructure.Lead network transformation programmes, hardware refreshes and platform upgrades.Deliver end-to-end migration activities, including planning, implementation and rollback strategies.Build and enhance network automation capabilities using Cisco NSO and modern automation technologies.Support routing, switching and optical networking across a global environment.Produce technical documentation, engineering standards and implementation plans.Work closely with architecture, operations and project teams to deliver strategic infrastructure initiatives.Troubleshoot complex networking issues and drive continuous service improvements. What We're Looking For Extensive experience engineering enterprise or service provider core networks.Strong expertise with Cisco IOS-XR.Hands-on experience with Cisco NSO and network automation.Excellent knowledge of MPLS, Segment Routing (SR-MPLS), BGP, OSPF and ISIS.Experience with Cisco 8000, ASR9000 or NCS platforms.Strong understanding of WAN and optical networking technologies.Experience with Python, YANG, NETCONF or REST APIs for network automation.Proven experience delivering large-scale network migrations, software upgrades and infrastructure transformation programmes. Desirable Experience CCNP or CCIE certification.Infrastructure as Code using Terraform or Ansible.Experience within highly regulated or financial services environments.Knowledge of cloud networking, DevOps methodologies or Arista technologies. If this sounds like a fit, APPLY NOW! Senior Core Network Engineer | 6 months initially | 2 days on site | London, Chester or Bromley | £465 p/d | Inside IR35