Senior Network Engineer – Contract (Inside IR35)

Location: Hybrid (London WC1)

Rate: £400–£450/day

Start Date: ASAP

Duration: 3–6 months - potential extension

Working Hours: 7 hours/day between 8am–6pm

4C Resourcing is supporting a confidential public sector organisation in the search for a Senior Network Engineer to join a major network transformation initiative. This role will play a pivotal part in a large‑scale network re‑architecture programme, working within the infrastructure project team and contributing to upgrades aligned with Cyber Essentials requirements. The successful candidate will help drive secure, resilient, and modernised network services across the organisation.

This hybrid role requires travel to central London. On-site Requirement: Tuesdays plus additional days as needed.

It is essential to be available at short notice to start this project, and to live within a commutable distance from Central London, typically within 1 - 1.5 hours. 

Key Responsibilities

VLAN, subnet, and security zone migrations

Switch and WiFi configuration, installation, and replacement

802.1x and NAC deployment

DDI (DNS, DHCP, IP) cleansing and consolidation

Firewall and Citrix Netscaler upgrades (including Panorama and MFA)

Monitoring and alerting setup

Technical documentation for approval boards

Essential Skills

5+ years in senior network roles

Experience leading Networking, NAC, DDI, and WiFi projects

Strong stakeholder engagement and communication

Hands-on experience with:

Palo Alto firewalls

Aruba and HP switches

Infoblox DDI

Meraki and Aruba WiFi

Aruba ClearPass

ITIL experience (change and incident management)

Skilled in creating and presenting high- and low-level designs

Desirable Experience

Panorama

SolarWinds

Citrix Netscalers

Meraki

This role may occasionally require out-of-hours work for planned service-affecting tasks. Ideal for a proactive engineer with strong technical leadership and a positive, can-do attitude.

Equal Opportunities: 4C Strategies is an equal opportunities employer. We celebrate diversity and are committed to creating an inclusive environment for all colleagues.