Are you a skilled Applications Engineer looking to support a nationally significant UK Defence programme? This is a unique opportunity to join a high-impact programme delivering next-generation deployable IT services to support operations both in the UK and overseas.
About the Programme
The programme is transforming the MOD’s deployable IT capability across Land and Maritime domains. It is replacing legacy CIS services with a modern, secure, and resilient in-house solution designed to meet the demands of frontline operations.
A core element of this transformation is the delivery of robust Through Life Support (TLS) services—ensuring systems remain operational, secure, and fully supported in dynamic and often challenging environments.
The Role
As a Level 3 or 4 Applications Engineer, you will be responsible for supporting, maintaining, and optimising the suite of deployed IT applications used across the programme. You will work closely with Service Desk, Resolver Groups, and other engineering teams to ensure applications perform reliably in operational contexts.
You will:
Provide Level 3 or Level 4 support for deployed applications, including troubleshooting, configuration, and optimisation
Ensure application performance, availability, and security in line with MOD and programme standards
Work with resolver groups and Level 4 engineers for escalated incidents and complex issues
Deploy updates, patches, and enhancements across operational environments
Collaborate with developers and system engineers to implement fixes and enhancements
Participate in testing, validation, and release of software changes
Document application support procedures, configurations, and known issues
Ensure compliance with ITIL-aligned service management processes
Level distinction:
Level 3: Focuses on operational support, troubleshooting, and routine deployments
Level 4: Leads complex problem resolution, escalations, and process improvements
What We’re Looking For
Proven experience in applications support or engineering at SFIA Level 3 or Level 4
Strong knowledge of enterprise or mission-critical applications used in UK Defence, especially MOTS or NATO
Experience with application troubleshooting, patching, and optimisation
Understanding of ITIL service management and incident management processes
Experience in secure or regulated environments, ideally defence/MOD
Excellent problem-solving, analytical, and communication skills
Ability to work on-site at Corsham full-time
Important Note
Due to the nature of this work, candidates must be eligible for appropriate UK security clearance.
All applicants must hold the Right to Work in the UK and already possess, or be eligible to obtain, a high level of National Security Clearance.
Due to the nature of our business, your nationality, previous nationalities, and country of birth may influence the types of roles for which you are eligible.
Why Join?
Work on a mission-critical national defence programme
Support mission-critical applications used in operational theatre
Opportunity to develop skills in highly secure, complex IT environments
25 days Annual Leave (plus Bank Holidays)
Employer Pension Contributions
Group Life Insurance
Dental & Health Cashback Plan
Wellbeing Services (includes GP, Physio and Savings Benefits)
Thorn Wellbeing Support Contribution
Employee Referral Scheme
Supported Training & Personal Development Opportunities
Apply
If you have the expertise to support this requirement and are eager to make an impact in a critical role, please apply today!
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Job Details
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Role: Applications Engineer (L3/L4)
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Location: Corsham
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Employment: Full Time
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Contract: Permanent
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