Worked on the opensearch-project/data-prepper repository to deliver enhancements to the add_entries processor, enabling parent field access during array iterations with configurable evaluation rules. The implementation introduced new configuration options, such as disable_root_keys and evaluate_when_on_element, allowing conditions to be applied to individual array elements for more granular data processing. Using Java and YAML, the work focused on improving configuration management and event processing, resulting in more flexible and maintainable transformations of nested event data. These changes reduced the need for downstream post-processing and supported more complex data workflows, reflecting a thoughtful approach to extensible data pipeline engineering.