Senior Network Engineer (Routing & Switching Specialist- freelance hybrid, London, UK

London - UK

Monthly Salary: Not Disclosed

Experience Required: 8-10years

Posted on: 18 hours ago

Vacancies: 1 Vacancy

Job Summary

Working closely with the Senior Network Architect this hands-on engineering role is focused on the practical remediation and documentation of a complex legacy Cisco environment. The successful candidate will be a routing expert capable of diagnosing and unpicking unconventional protocol configurations building standards-compliant designs and supporting the convergence of two network environments.

Key responsibilities

Audit and document the existing network estate (1000 devices across both banking entities)
Identify and remediate non-standard routing configurations including atypical EIGRP deployments
Define and implement standardised change categories change risk classifications and change management templates
Support the transition from hybrid ACI to target-state architecture
Develop network documentation and operational runbooks
Provide detailed input into the network baseline assessment
Act as a subject matter expert during change approval board (CAB) reviews
Work with managed service providers to ensure designs and standards are followed during implementation.

Requirements

Must have

Expert-level Cisco Routing & Switching: IOS IOS-XE NX-OS
Hands-on experience with Cisco Nexus platforms (2K 5K 7K 9K)
Deep routing protocol knowledge: EIGRP OSPF BGP including troubleshooting of complex or misconfigured environments
Familiarity with Cisco ACI and spine-leaf fabric architectures
Proficiency with network documentation tools and diagramming
Experience working in dual-stack (legacy modern) environments
Understanding of network security segmentation and firewall integration

Advantageous

CCIE or CCNP (Routing & Switching or Data Centre)
Automation/scripting experience (Python Ansible or similar)
Experience in financial services or similarly regulated environments

Soft skills

Detail-oriented with a methodical approach to problem diagnosis
Able to produce clear well-structured technical documentation
Comfortable working in a fast-paced environment with competing priorities
Constructive and collaborative when working with legacy team members and external managed service providers

Required Skills:

Cisco Routing & Switching Cisco IOS Cisco IOS-XE Cisco NX-OS Cisco Nexus (2K 5K 7K 9K) Cisco ACI Spine-Leaf Architecture EIGRP OSPF BGP Routing Protocol Troubleshooting Legacy Network Remediation Network Auditing Network Documentation Network Diagramming Network Runbooks Change Management Change Risk Classification Change Approval Board (CAB) Network Standards Implementation Network Baseline Assessment Firewall Integration Network Security Segmentation Dual-Stack Network Environments Python Ansible Network Automation

Required Education: