Lead Secure Messaging Architect (On-Prem Exchange) - DV Cleared

Sopra Steria; Gloucester; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Car allowance £5,400

25 days annual leave

Private medical

Life assurance

Pension

Flexible benefits

Job summary

Sopra Steria is seeking a Lead Infrastructure Engineer to own mission-critical messaging services for a UK Government client. You will drive secure messaging strategy, act as the technical authority for Exchange On-Premises, and shape the evolution of defence messaging solutions from concept to deployment.

The role requires expertise in highly regulated environments, DV/eDV clearance, and on-site work in Gloucestershire with a strong emphasis on reliability, security and governance.

Qualifications

• Extensive experience designing, engineering and implementing Microsoft Exchange On-Premises in enterprise or regulated environments.
• Strong expertise in messaging architecture, infrastructure engineering and secure communication platforms.
• Experience with SPSE and wider Microsoft collaboration technologies.
• Strong experience supporting and engineering Skype for Business in 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 adhering to SLAs.

Responsibilities

• Leading the architecture, design and implementation of secure messaging and collaboration solutions across mission-critical environments.
• Acting as the technical authority for Microsoft Exchange On-Premises and associated messaging technologies.
• Defining technical strategy, standards and roadmaps to evolve messaging capability and deliver 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, and governance-aligned.
• Driving continuous improvement, resilience, and cost optimisation across messaging platforms.

Skills

Exchange On-Premises

Messaging architecture

SharePoint SPSE

Skype for Business

X.400 messaging

Defence security

Education

MCSE certification

Tools

SharePoint SPSE

Job description

Sopra Steria is seeking a Lead Infrastructure Engineer to own mission-critical messaging services for a UK Government client. You will drive secure messaging strategy, act as the technical authority for Exchange On-Premises, and shape the evolution of defence messaging solutions from concept to deployment.

The role requires expertise in highly regulated environments, DV/eDV clearance, and on-site work in Gloucestershire with a strong emphasis on reliability, security and governance.