Karl Goeltner developed unified search backend dependency management for the conductor-oss/conductor repository, focusing on simplifying and improving the flexibility of search engine integration. He implemented a feature that enables dynamic selection of Lucene versions based on the configured index engine, defaulting support to Elasticsearch 8.11.1 while laying groundwork for OpenSearch compatibility. By removing direct Lucene dependencies and introducing streamlined backend imports, Karl reduced maintenance complexity and made backend switching more resilient. His work involved build configuration and dependency management using Gradle, Dockerfile, and YAML, and included comprehensive documentation updates to guide users through the new backend configuration process.