Cambridge Campus Network Engineer - Contractor

CBSbutler Holdings Limited trading as CBSbutler; Teversham; On-site; GBP 74,000 - 81,000; Full time

Job summary

CBSbutler Holdings Limited trading as CBSbutler seeks an experienced Network Contractor to support a major campus network redesign and remediation programme in Cambridge. This onsite contract role offers a day rate of £400-£440 inside IR35, with planned evening and weekend change windows.

You will review topology, configure Cisco routers and switches, resolve L2/L3 issues, and produce MOPs, HLD/LLD, and documentation. CCNA/CCNP and disciplined change-control are required.

Qualifications

• CCNA or demonstrable Cisco networking experience.
• Strong Cisco routing and switching background.
• Practical OSPF and working BGP experience.
• Enterprise campus network experience.
• Strong network troubleshooting skills.
• Experience cleaning up and standardising legacy configurations.
• Cisco wireless knowledge and Aruba networking/wireless experience.
• Experience working under formal change-control processes.
• Strong technical documentation skills.
• Ability to work onsite in Cambridge.
• Flexibility to support planned evening/weekend changes.
• CCNP-level knowledge is desirable.
• Cisco Catalyst experience is desirable.
• Campus redesign/migration experience is desirable.
• Experience in mixed Cisco/Aruba environments is desirable.
• HLD/LLD experience is desirable.
• Exposure to network automation or configuration management is desirable.

Responsibilities

• Review our existing campus network topology and configurations.
• Identify and remediate legacy, redundant, inconsistent or obsolete configuration.
• Support our network redesign and logical simplification.
• Configure and troubleshoot Cisco routers and switches.
• Troubleshoot complex Layer 2/Layer 3 connectivity and routing issues.
• Review and remediate VLANs, SVIs, trunks, port channels, routing and associated configuration.
• Support migration from legacy configurations to our agreed target design.
• Identify and remediate unused VLANs, interfaces, static routes, ACLs, prefix lists, route maps and unnecessary routing advertisements.
• Support Cisco wireless environments and troubleshoot basic Aruba networking/wireless issues.
• Prepare and implement controlled production network changes.
• Produce MOPs, implementation plans, rollback procedures and validation plans.
• Complete pre- and post-change testing and documentation.
• Produce accurate HLD/LLD, as-built, topology, routing and operational documentation.
• Work collaboratively with our internal engineering teams while operating independently when required.
• Participate in planned production changes and migrations, including change planning, risk assessment, implementation documentation, troubleshooting during implementation, and planned evening and weekend maintenance windows.

Skills

CCNA

Routing & Switching

OSPF

BGP

Campus network

Troubleshooting

Legacy configuration cleanup

Cisco wireless

Aruba networking

Change control

Technical documentation

On-site Cambridge

Evening/weekend support

CCNP desirable

Cisco Catalyst

Campus redesign/migration

Mixed Cisco/Aruba

HLD/LLD

Network automation exposure

Tools

Aruba

Cisco

Support

Network

Windows

LAN

TCP/IP

Job description

CBSbutler Holdings Limited trading as CBSbutler seeks an experienced Network Contractor to support a major campus network redesign and remediation programme in Cambridge. This onsite contract role offers a day rate of £400-£440 inside IR35, with planned evening and weekend change windows.

You will review topology, configure Cisco routers and switches, resolve L2/L3 issues, and produce MOPs, HLD/LLD, and documentation. CCNA/CCNP and disciplined change-control are required.