Senior Application Packager - MSIX Specialist

- Expert-level understanding of MSIX architecture, including staging vs registration, container isolation, VFS, private registry hives, user-context behaviour, and package signing. - Strong knowledge of MSIX limitations, particularly around services, drivers, global COM, system-level integrations, and constraints of per-user registration. - Hands-on experience with MSIX Packaging Tool and third-party tooling (e.g. TMEditX), conversion workflows, package editing, manifest troubleshooting, PSF (Package Support Framework), and fixups. - Experience deploying MSIX in enterprise environments using AppVentix and/or App Attach. - Ability to advise on MSIX suitability assessments, edge-case remediation, and when not to choose MSIX and retain current App-V 5.x packages. - Confidence working with MSIX in non-persistent VDI. - Deep, battle-tested experience across traditional and modern packaging technologies: App-V 5.x, MSI, and PSADT. - Proven experience supporting application delivery in large, complex enterprises with strict governance. - Understanding of app delivery to Citrix non-persistent VDI, image management, profile volatility, and session behaviour. - Ability to troubleshoot across the entire application stack: OS integrations, dependencies, runtimes, COM, registry, file system, permissions, and virtualisation layers. - Strong investigative mindset to deep-dive into logs, manifests, event traces, ProcMon captures, and debug difficult packaging failures.