Jan Schumacher focused on improving deployment and build reliability across multiple Wire repositories over a two-month period. On wireapp/wire-webapp, Jan corrected Helm chart resource naming to derive names from configuration values, reducing deployment errors and enhancing CI/CD consistency using Helm and Kubernetes. For wireapp/wire-desktop, Jan transitioned macOS builds to a dedicated agent, replacing the Jenkins controller to stabilize and speed up releases. In wireapp/wire-avs, Jan aligned CI macOS environments and improved cryptographic build stability by refining Makefile scripting and static linking with libsodium. These changes, implemented in Groovy, YAML, and Makefile, addressed persistent build issues and improved release quality.