Network Engineer

  • Limelight Health
  • 14/06/2026
Full time Information Technology Telecommunications

Job Description

Network Engineer

Location: West London (Twickenham)

Clearance: High level of clearance required (SC/DV - 'Developed Vetting')

Contract Type - Fixed-Term 18 month contract

Role Overview

The role requires working on secure Government sites up to 5 days per week. You will be expected to contribute towards the creation and ongoing maintenance of technical documentation (HLDs, LLDs, Work Instructions) and provide material to support change projects when required.

Work will be on customer sites (West London) with occasional travel to other Leidos and customer sites (Huntingdon).

Keeping an eye on the technology landscape is essential; identification of new and relevant technologies to solve problems and make improvements is part of the job.

The preferred candidate will demonstrate effective application of Network Engineering expertise and extensive knowledge across a variety of technologies and platforms, including Virtualized Environments, Networking Technologies and Data Storage Technologies.

Responsibilities
  • Provide Network Engineering skills and produce solution designs as part of the senior delivery team
  • Work with partner delivery teams to design and implement modern, scalable Network using a range of new and emerging technologies including automation
  • Lead on all Network management and acceptance aspects including setting standards and providing your deep technical expertise to Leidos programme teams
  • Utilise the concepts and principles of verification and validation to produce relevant Network Designs across multiple subject areas
  • Collaborate with customers on all aspects of Network management including the assurance and integration of Network services to meet the needs of multiple lines of business
  • Recognise and exploit business opportunity by leveraging engineering and design best practice
  • Communicate effectively across organisational, technical and political boundaries, understanding the context
  • Strong knowledge and demonstrable experience of data centre and campus networking technologies: Cisco (routing, switching, firewalls), Fortinet (Fortigate and FortiSwitch), Palo Alto (Next Gen firewalls), Juniper SRX, F5 (global and local load balancing) and Encryption.
  • Strong understanding of routing protocols (static and dynamic) in data centre, campus and wide area networks.
  • Experience and knowledge of networking - L2/3 networking and routing
  • Strong experience of operating high availability data centre networks supporting critical workloads on Windows, Linux and SAN including technical refresh of large numbers of devices
  • Strong experience of monitoring and management tooling including SolarWinds.
  • Have good general knowledge of Windows Server Environments, (including OS build, AD, DNS, DHCP and GPO) and Linux (RHEL) data centre server infrastructures.
  • Have excellent analysis and problem solving skills, taking ownership of complex incidents ensuring these are resolved to the satisfaction of the customer.
  • Possess excellent written and verbal communication skills.
  • Experience with working within a Defence environment.
Requirements
  • Hybrid working policy SC/DV required; ability to obtain a high level of security clearance.
Benefits
  • Contributory Pension Scheme
  • Private Medical Insurance
  • 33 days Annual Leave (including public and privileged holidays)
  • Access to Flexible benefits (life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme)
  • Dynamic Working
Equality and Diversity

We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture. We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone. If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs.

About Leidos

Leidos UK & Europe work to make the world safer, healthier, and more efficient through technology, engineering and science.