Worked on the eclipse-platform/eclipse.platform repository to enhance the reliability of refresh workflows by addressing a progress monitor synchronization bug in refresh jobs. Focused on concurrency management and software testing using Java, the work involved coordinating progress monitors between two consumers to prevent progress overshoot and ensure accurate user-facing metrics. Introduced a regression test and a protected test seam to improve testability while preserving the existing API surface, minimizing disruption to production code. The changes were integrated with the project’s CI pipeline, resulting in more reliable progress reporting and a reduction in unnecessary progress ticks during synchronization operations.