Worked on stabilizing VMware VMOps live migrations in the sapcc/nova repository by addressing a bug related to VmGroup synchronization. Focused on backend development using Python, the solution expanded VmGroup filtering to include earlier migration states, such as 'accepted' and 'queued', ensuring accurate synchronization throughout the migration process. The approach involved removing virtual machines from VmGroups before migration began, which prevented membership mismatches and reduced the risk of migration failures. This fix improved the reliability of live migrations, minimized downtime for customers, and lowered support overhead. The work demonstrated expertise in cloud computing and virtualization within complex production environments.