Lead Messaging Engineer (eDV Cleared)

  • NSD
  • Gloucester, Gloucestershire
  • 22/07/2026
Full time Information Technology Telecommunications

Job Description

Lead Messaging Engineer (eDV Cleared)

  • Locations: Cheltenham (on-site)
  • Salary: Up to £75,000 + car allowance + clearance bonus
  • To apply, email:

We're looking for an experienced Lead Messaging Engineer to join a highly secure engineering team delivering mission-critical communication platforms that support national security operations.

This is a fantastic opportunity for someone with strong Microsoft messaging expertise who enjoys working in a structured, highly regulated environment. You'll take ownership of secure on-premise messaging platforms throughout their full lifecycle, from design and implementation through to ongoing support, optimisation and continuous improvement.

Working as part of a collaborative technical team, you'll also have the opportunity to broaden your expertise across a wider messaging capability, making this role particularly well suited to candidates from defence, military or other secure communications backgrounds.

What you'll be doing

  • Designing, building, configuring and deploying secure on-premise messaging and collaboration platforms.
  • Managing and supporting critical messaging infrastructure, ensuring high availability, resilience and performance.
  • Troubleshooting complex technical issues across messaging and infrastructure technologies.
  • Leading or contributing to technical project delivery within a structured governance framework.
  • Driving service improvements, operational efficiency and platform optimisation.
  • Supporting knowledge sharing and mentoring across the wider messaging team.

What we're looking for

  • Active eDV clearance (essential).
  • Strong experience administering Microsoft Exchange On-Premise environments.
  • Hands-on experience with SharePoint Server Subscription Edition (SPSE).
  • Experience supporting Skype for Business within enterprise environments.
  • Strong infrastructure knowledge, including administration, troubleshooting, clustering and hardware evaluation.
  • Experience working within highly governed environments with strict service level agreements.

Desirable experience

  • Experience with X.400 messaging, particularly within military or highly secure environments.
  • Microsoft certifications (or equivalent) across messaging or infrastructure technologies.
  • Strong technical documentation skills, including operational procedures and user guidance.

Package

  • Salary up to £75,000
  • Car allowance (or cash alternative)
  • Annual DV clearance retention bonus
  • 25 days' annual leave, with the option to buy up to an additional 10 days
  • Private medical insurance
  • 6% employer pension contribution

Due to the nature of this role, applicants must hold active eDV clearance and be eligible to work from one of the listed locations on a full-time, site-based basis.


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