At a Glance
- Tasks: Audit and document a complex Cisco network while remediating non-standard configurations.
- Company: Inclusive tech company in London, promoting diversity in the workplace.
- Benefits: Hybrid work model, competitive pay, and opportunities for professional growth.
- Other info: Fast-paced environment with opportunities to collaborate and innovate.
- Why this job: Join a dynamic team and make a real impact on network architecture.
- Qualifications: Expert-level Cisco Routing & Switching skills and hands-on experience with Nexus platforms.
The predicted salary is between 51750 - 63250 £ per year.
- Senior Network Engineer (Routing & Switching Specialist) - freelance - hybrid, London, UK
- London, United Kingdom | Posted on 09/03/2026
We are committed to building an inclusive workplace and encourage applications from women and other under-represented groups in tech.
All qualified candidates are welcome.
Start date: Apr/ May 2026 Location: London, UK (Hybrid — minimum 2 days per week in office)
Job Description
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.
Responsibilities
- Audit and document the existing network estate (~1,000 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
- Advantages
- CCIE or CCNP (Routing & Switching or Data Centre)
- Automation/scripting experience (Python, Ansible, or similar)
- Experience in financial services or similarly regulated environments
- 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
- #J-18808-Ljbffr
Senior Network Engineer (Routing & Switching Specialist) - freelance - hybrid, London, UK employer: Comgent
As a Senior Network Engineer in London, you will join a forward-thinking company that values inclusivity and diversity, fostering a collaborative work culture where your expertise in routing and switching will be highly regarded. With opportunities for professional growth and the chance to work on complex network environments, this hybrid role offers a perfect balance of flexibility and engagement, making it an excellent choice for those seeking meaningful and rewarding employment in the tech sector.
