Senior Network Automation Engineer – IOS-XR/NSO (Contract)

World Wide Technology, Inc.; Greater London; Hybrid; GBP 120,000 - 166,000; Full time

Job summary

World Wide Technology is seeking a Network Engineer to own design, automation and lifecycle management of global core network infrastructure. The role requires deep Cisco IOS-XR and NSO automation expertise, with a track record migrating large-scale networks and delivering complex upgrades across a global estate.

The contract is 6 months, inside IR35, with hybrid work: 2 days onsite per week in London. Candidates will undergo background checks and must be eligible to work in the UK.

Qualifications

• 10+ years in large enterprise or service provider network environments.
• Expert knowledge of Cisco IOS-XR architecture and troubleshooting.
• Strong grounding in MPLS, Segment Routing, BGP, ISIS, OSPF, and EVPN.
• Hands-on experience with Cisco 8000, ASR 9000, or NCS 5500/5700.
• Strong Cisco NSO experience, including YANG, Python, and NETCONF/REST.
• Experience with DWDM and optical transport networking.
• Strong stakeholder management and vendor engagement skills.
• CCNP or CCIE (Enterprise or Service Provider).
• Experience with Cisco Crosswork, Terraform, or Ansible.
• Financial services or investment banking experience.
• SD-WAN or Arista CloudVision experience.

Responsibilities

• Develop and maintain Cisco NSO automation, service models, and workflows.
• Lead migration and transformation across Cisco 8000, ASR 9000, and NCS platforms.
• Design and support large-scale WAN, MAN, and Optical Transport networks.
• Troubleshoot routing and control-plane issues in production IOS-XR environments.
• Build low-level designs, runbooks, and rollback plans for migrations.
• Drive infrastructure-as-code and model-driven automation initiatives.
• Support change management, CAB reviews, and root cause analysis.
• Maintain engineering standards and technical documentation.

Skills

Cisco IOS-XR

NSO automation

YANG

Python

NETCONF/REST

BGP

IS-IS

OSPF

EVPN

Terraform

Ansible

DWDM

Education

CCNP or CCIE

Tools

Cisco Crosswork

Terraform

Ansible

Job description

World Wide Technology is seeking a Network Engineer to own design, automation and lifecycle management of global core network infrastructure. The role requires deep Cisco IOS-XR and NSO automation expertise, with a track record migrating large-scale networks and delivering complex upgrades across a global estate.

The contract is 6 months, inside IR35, with hybrid work: 2 days onsite per week in London. Candidates will undergo background checks and must be eligible to work in the UK.