Network Engineering Specialist

Our client is one of the UK's most recognised and influential communications organisations — a household name that keeps the country connected and is right at the heart of the nation's digital infrastructure. This isn't a small fish; this is a business that operates at serious scale and is actively shaping what comes next in networking and technology. The Engineering team works across a wide variety of platforms and technology stacks, maintaining and developing both bespoke and off-the-shelf capabilities for some incredibly demanding customers. The team is London-based, collaborative, and built around a genuine culture of technical excellence — if you're the kind of engineer who wants to work on complex, meaningful problems with smart people around you, this is the place. To be considered, you'll need strong hands-on experience across enterprise routing protocols (think OSPF, BGP, IS-IS), LAN switching, and network security — including firewalls, IPSec and 802.1x. Exposure to SD-WAN, automation tooling like Ansible or Terraform, and third-line support for complex IP networks will put you right at the front of the queue. You'll also need to hold or be eligible for DV clearance, so that's a must. Sound like you? APPLY TODAY and let's talk.

Working Patterns and location – Fully on site

·       Design, build, test and maintain all network infrastructure components end-to-end.

·       Implement new and enhanced network technologies aligned to customers' strategic connectivity goals.

·       Manage installation and configuration of physical and virtual network hardware including firewalls and routers.

·       Drive implementation of core and cloud infrastructure security to manage risk and exposure.

·       Contribute to technology lifecycle planning and network health assessments and roadmaps.

·       Deliver documentation, knowledge transfer and training to support new solutions into operations.

·       Mentor junior engineering professionals and act as a technical resource for the wider team.

·       Champion emerging trends and keep the team current on developments in network engineering.

·       Experience with enterprise and operator-scale routing protocols including OSPF, BGP, IS-IS, LDP or RSVP.

·       Strong knowledge of LAN switching including RSTP/MSTP, LAG, MC-LAG and first-hop resilience protocols.

·       Experience implementing network security including MACSEC, IPSEC and 802.1x.

·       Knowledge of network security design including firewall, IDS and IPS configuration and management.

·       Experience designing, building and providing third-line support for complex, resilient IP networks.

·       Experience integrating networks and management software in on-premise environments.

·       Strong documentation skills with careful attention to change management processes.

·       Strong communication skills with the ability to engage technical teams and senior customers alike.

·       Exposure to Software Defined Networking principles, ideally with VMware NSX.

·       Experience with network automation and Infrastructure-as-Code tooling such as Ansible, Terraform, Puppet or Chef.

·       Transferable automation experience with Cisco DNA Centre.

·       Experience working in a DevOps environment alongside software and infrastructure teams.

·       Relevant industry certifications such as CCNP, CCIE or equivalent.

·        

Our clients offer a range of benefits for permanent workers, as well as an excellent salary you will receive the following:

• Annual bonus up to 10%.

• Pension up to 5% Employee/10% Employer.

• Private Medical Cover.

• Dental Insurance.

• Health Assessment.

• Life Assurance.

Our client is committed to providing a diverse and inclusive workplace and welcomes applications from all backgrounds.

Part-time opportunities/flexible working is available to suit individual needs.

RECOMMEND A FRIEND: If you have professional friends/colleagues who would be interested in one of our roles and our excellent levels of service too, we'd like to recognise your recommendations with a 'thank you' of our own. For every friend you refer who then starts a role through Datasource either Contract or Permanent, we will send you £200 of Love to Shop Gift Vouchers & gift your friend £100 in Love to Shop Gift Vouchers as well!

You will be required to hold a minimum of DV Clearance. If you do not hold an active DV Clearance, please familiarise yourself with the vetting process before applying.

(c) Copyright Datasource Computer Employment Limited 2026.