Application Packager (DV Cleared) in Slough

Application Packager (DV Cleared)
Location:
Reading, UK (100% Onsite) Engagement:
6-Month Contract (Inside IR35) Security Clearance:
Valid, fully transferable Developed Vetting (DV) clearance is mandatory
Role Overview
We are seeking an experienced
Application Packager
to join our Software Discovery and Packaging Team supporting a secure, mission-critical defence programme in Reading. Operating fully onsite within an air-gapped/controlled environment, you will manage the end-to-end application lifecycle-from initial requirements discovery and packaging through to deployment, patching, and retirement. The estate encompasses Windows 10/11 endpoints managed via Microsoft Endpoint Configuration Manager (MECM), requiring a specialist who is equally adept at modern packaging methodologies and legacy software remediation.
Key Responsibilities
End-to-End Packaging Lifecycle:
Lead software intake and discovery, evaluating licensing, identifying dependencies, rationalising redundant versions, and delivering clean, production-ready packages. Packaging & Authoring:
Develop, test, and maintain MSI packages, MST transforms, and custom scripted installers using tools such as Flexera AdminStudio, InstallShield, and ORCA. Complex Application Delivery:
Package bespoke, legacy, and high-complexity software suites (e.g., Autodesk, Microsoft 365/Office, specialised engineering, and scientific tooling). MECM Deployment & Management:
Configure and deploy packages using the MECM Application Model, setting up robust detection rules, system requirements, dependencies, supersedence, and rollback routines. Testing & Quality Assurance:
Conduct clean-build testing, orchestrate User Acceptance Testing (UAT) with business application owners, and maintain detailed technical sign-off documentation. Secure Environment Operations:
Manage software media imports, vulnerability scanning, and cryptographic provenance checks in compliance with strict air-gapped security protocols. OS & Migration Support:
Support Windows 10/11 migration tracks, large-scale software rollouts, and endpoint gold-image build engineering. Tier-3 Troubleshooting:
Investigate and resolve complex deployment failures using installer logs, Process Monitor, and diagnostic utilities. Governance & Process:
Adhere strictly to ITIL-aligned Change, Configuration, and Release Management frameworks, providing regular deployment reporting and audit-ready records.
Essential Criteria & Skills
Security Clearance:
Active, fully transferable UK Developed Vetting (DV) clearance. Enterprise Packaging Expertise:
Proven track record packaging for enterprise Windows 10/11 environments, with deep knowledge of MSI table architecture, transforms, custom actions, and repair mechanisms. Tooling:
Proficient with Flexera AdminStudio, InstallShield, and ORCA (or industry equivalents). Scripting & Automation:
Strong PowerShell scripting skills, particularly with the PowerShell App Deployment Toolkit (PSADT). MECM/SCCM:
Hands-on experience with MECM Current Branch (Application Model, distribution points, collections, and deployment monitoring) alongside Active Directory and Group Policy. Troubleshooting:
Advanced diagnostic capability using Sysinternals (Process Monitor, Process Explorer) and MSI verbose logging. Stakeholder Management:
Confident communicator able to collaborate with technical peers, service delivery managers, and non-technical business stakeholders.
Desirable Experience
Prior experience in UK Defence, Central Government, or high-security air-gapped environments. Modern deployment formats: MSIX, Intune (Win32 apps), or virtualised delivery (App Volumes, Citrix/VDI). Legacy migration experience involving Windows 7 remediation, App-V sequencing, or VBScript/Batch conversion. Exposure to OS Deployment (OSD) task sequences and base gold-image creation. Relevant industry certifications (e.g., Flexera Certified, Microsoft Certified, or ITIL Foundation). Randstad Technologies is acting as an Employment Business in relation to this vacancy.
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