Contract: Senior Core Network Engineer
Start Date: ASAP (once background checks are completed)
Duration: 6 months +
Location: Hybrid (2 days a week in either London (City) , Cheshire or SE London
Rate: £400 - £465 a day (Deemed inside IR35 via umbrella solution)
Reference: 20795
Looking for a Senior engineer with deep Cisco IOS-XR expertise, strong Cisco NSO automation experience, and a proven track record delivering large-scale network migrations, software upgrades, hardware refresh programmes, and automation initiatives within complex global enterprise or service provider environments.
You will be capable of delivering SIM Core and Core 2.0 transformation programmes, including Cisco 8000 deployments, IOS-XR lifecycle management, and NSO-based network automation.
Role Summary
Contract with IT Systems Integrator working on a global Banking client project. Senior Core Network Engineer to join the EMEA Internal Networks Engineering team.
Responsible for the design, implementation, automation, and lifecycle management of the firm's global Core Network infrastructure. This role requires strong expertise in Cisco IOS-XR, Cisco NSO, MPLS Segment Routing, Optical Transport technologies, and large-scale network migrations.
The engineer will act as a technical SME, leading network transformation initiatives, software upgrades, hardware refresh programmes, automation development, and operational improvements across EMEA and the global network estate.
Key Responsibilities
Core Network Engineering
- Design, implement, and support large-scale WAN, MAN, and Optical Transport networks.
- Lead migration and transformation programmes involving:
- Cisco 8000 Series Routers (8011/8212) / Cisco ASR 9000 Series / Cisco NCS 5500/5700 Platforms / Cisco DWDM Platforms / Arista Routing and Optical Platforms
- Develop Low-Level Designs (LLDs), implementation procedures, migration runbooks, and rollback plans.
- Deliver network software upgrades, platform lifecycle activities, and hardware refresh programmes.
- Provide technical leadership for complex engineering and transformation projects.
Cisco IOS-XR
- Expert knowledge of Cisco IOS-XR architecture, operations, and troubleshooting.
- Strong experience with:
- Segment Routing (SR-MPLS) / MPLS L2VPN/L3VPN / ISIS / BGP / OSPF / EVPN / Multicast (mLDP/PIM) / QoS / IPv4/IPv6
- Troubleshoot routing, forwarding, and control-plane issues within large-scale production environments.
Network Automation & Cisco NSO
- Develop and maintain Cisco NSO automation solutions.
- Design and support:
- Service Models / YANG Models / Python Automation / NETCONF/REST APIs / Templates and Workflow Integration
- Develop automation capabilities for provisioning, compliance validation, configuration management, and software upgrades.
- Drive Infrastructure-as-Code and model-driven network automation initiatives.
Operational Excellence
- Produce and maintain engineering standards, operational procedures, and technical documentation.
- Support change management processes including CRQs, CAB reviews, and implementation activities.
- Perform root cause analysis and drive continuous service improvement.
- Collaborate with architecture, operations, vendors, and project teams to deliver strategic initiatives.
Required Skills
Core Networking
- 10+ years of experience within large enterprise or service provider environments.
- Expert knowledge of:
- MPLS / Segment Routing (SR-MPLS) / ISIS / BGP / OSPF /EVPN / L2VPN/L3VPN / Multicast / QoS / IPv4/IPv6
Cisco IOS-XR
- Cisco 8000 Series / ASR 9000 / NCS 5500/5700
Cisco NSO & Automation
- Strong Cisco NSO experience.
- YANG / Python / NETCONF / REST APIs / gNMI / Git
Optical Networking
- Cisco DWDM / Optical Transport Networks / Dark Fibre /Carrier Services / Metro Ethernet / Long-haul Optical Infrastructure
Tools & Technologies
- Cisco NSO / Forward Networks / HPNA / SevOne / Splunk / NetScout / Wireshark / NNMi OBM / IBM Watson / Jira Confluence
Professional Skills
- Strong analytical and troubleshooting skills.
- Excellent verbal and written communication.
- Strong stakeholder management and vendor engagement experience.
- Ability to work independently and lead technical initiatives.
Networking People (UK) is acting as an Employment Business in relation to this vacancy.
JBRP1_UKTJ
Senior Core Network Engineer in Leeds employer: Networking People (UK) Limited
Join a forward-thinking company in London that values innovation and technical excellence, offering a collaborative work culture where your expertise as an SAP Technical Architect will be recognised and rewarded. With a focus on employee growth, you will have access to continuous learning opportunities and the chance to lead impactful projects within a complex SAP landscape. Enjoy the benefits of a competitive rate, flexible onsite working arrangements, and the support of a dynamic team dedicated to achieving success together.
Contact Details:
Networking People (UK) Limited Recruitment Team
