About the role

You will act as the technical authority for enterprise messaging services, leading the design, implementation, and evolution of secure platforms. This involves defining technical strategy, providing advanced troubleshooting, and ensuring messaging services remain resilient and aligned with national security requirements.

What they look for

Microsoft Exchange On-Premises Messaging architecture Infrastructure engineering SharePoint Server Subscription Edition Skype for Business System integration Platform optimization Root cause analysis Technical leadership Secure communications Clustering Resilience Hardware evaluation Governance X.400 messaging

Requirements

The role requires extensive experience in engineering Microsoft Exchange On-Premises solutions within highly regulated or enterprise environments. Candidates should possess deep technical infrastructure knowledge and experience with secure communication platforms, with professional certifications like MCSE being highly desirable.

Benefits

Flexible working arrangements Compressed hours Professional development Coaching and mentoring

Full description

Lead Infrastructure Engineer – Messaging Solutions

You will act as the technical authority and lead subject matter expert for enterprise messaging services, with particular focus on Microsoft Exchange On-Premises and secure communications technologies.

Working within a highly governed and collaborative team, you will take ownership of the design, implementation and evolution of critical messaging platforms that support national security operations.

This is a rare opportunity to shape the future direction of secure messaging capability, leading the delivery of new solutions from concept and architecture through to implementation, optimisation and lifecycle management.

You'll provide technical leadership across complex infrastructure initiatives, ensuring messaging services remain resilient, secure and aligned to evolving user and operational requirements.

The role will particularly appeal to individuals with experience in military messaging environments, defence communications, X.400 messaging systems or other highly secure communications infrastructures where security, availability and reliability are paramount.

We recognise the importance of flexibility and, where business needs allow, support a range of flexible working arrangements, including compressed hours such as a five-day week worked over four days.

What you'll be doing:

Leading the architecture, design and implementation of secure messaging and collaboration solutions across mission-critical environments.
Acting as the technical authority and subject matter expert for Microsoft Exchange On-Premises and associated messaging technologies.
Defining technical strategy, standards and roadmaps to support the evolution of messaging capability and the delivery of new services.
Providing advanced troubleshooting, root cause analysis and resolution of complex messaging, infrastructure and platform issues.
Leading technical delivery activities across projects, ensuring solutions are secure, scalable, supportable and aligned to governance requirements.
Driving continuous improvement, resilience, supportability and cost optimisation across messaging and communication platforms.

What you'll bring:

Extensive experience designing, engineering and implementing Microsoft Exchange On-Premises solutions within enterprise or highly regulated environments.
Strong expertise in messaging architecture, infrastructure engineering and the delivery of secure communication platforms.
Experience with SharePoint Server Subscription Edition (SPSE) and wider Microsoft collaboration technologies.
Strong experience supporting and engineering Skype for Business within enterprise environments.
Deep technical infrastructure knowledge including clustering, resilience, hardware evaluation, system integration and platform optimisation.
Proven experience delivering technical solutions within highly governed environments and working to demanding service level agreements.

It would be great if you had:

Experience with X.400 messaging systems, particularly within military, defence or other highly secure environments.
Experience designing or supporting military messaging systems, secure communications platforms or nationally critical services.
Microsoft Certified Solutions Expert (MCSE) certification or equivalent industry certification.
Experience producing high-quality technical

documentation, operational procedures and support artefacts.

Location: CheltenhamReferral: £1500.Internal Recruiter: Paul Security Clearance Level: Developed Vetting (DV).

If you’re interested and need to work flexibly, we encourage you to apply and talk to us about what might be possible.

Loved reading about this job and want to know more about us?

Sopra Steria’s Aerospace, Defence and Security business designs, develops and deploys digital solutions to Central Government clients. The work we do makes a real difference to the client’s goal of National Security, and we operate in a unique and privileged environment. We are given time for professional development activities, and we coach and mentor our colleagues, sharing knowledge and learning from each other. We foster a culture in which employees feel valued and supported and have pride in their work for the customer, delivering outstanding rates of customer satisfaction in the UK’s most complex safety and security critical markets.