Developed and delivered JSON array payload support for the Splunk HEC receiver in the open-telemetry/opentelemetry-collector-contrib repository, enabling clients to batch multiple events in a single API request. This backend feature, implemented in Go, focused on improving ingestion efficiency and reducing network overhead for Splunk-backed telemetry pipelines. The work included comprehensive unit testing to validate the new payload format and updates to documentation to guide users on integration. Throughout the process, the developer adhered to CI and code review standards, ensuring stability and maintainability. The contribution enhanced API development practices and streamlined client integration for telemetry ingestion workflows.