Worked on enhancing the reliability of the Elasticsearch Output Connector in the redpanda-data/connect repository, focusing on robust handling of concurrent data updates. Addressed a critical issue by enabling and propagating the retry_on_conflict option throughout the connector’s configuration, ensuring that bulk indexing operations automatically retry on version conflicts. This change involved updating the esoConfig and wiring the configuration through to pendingBulkIndex, reducing failed writes and improving data integrity during high-concurrency scenarios. The work was implemented in Go, leveraging skills in connector development and Elasticsearch integration, and included clear, maintainable commit documentation to support ongoing traceability and maintainability of the codebase.