Worked on the stackitcloud/gardener repository to address compatibility issues with Elasticsearch and OpenSearch by removing the deprecated _type field from bulk request configurations and associated tests. This backend development effort, implemented in Go, focused on ensuring that the reporter component remains functional with Elasticsearch 8 and OpenSearch 2, thereby reducing upgrade friction for users migrating to newer search backends. The change was validated through targeted updates to both configuration and test suites, aligning the codebase with modern search backend requirements. This work contributed to the ongoing maintenance and stability of deployments relying on up-to-date Elasticsearch and OpenSearch technologies.