Worked on enhancing the Micronaut serialization library by implementing ZoneId JSON serialization support in the micronaut-projects/micronaut-serialization repository. Developed the ZoneIdSerde component to enable accurate serialization and deserialization of ZoneId values within JSON payloads, addressing the challenge of correct time zone handling across distributed services. Utilized Java and Groovy to ensure robust integration with existing serialization mechanisms, focusing on data correctness and interoperability for JSON APIs. Emphasized thorough testing to validate the new feature’s reliability. This work improved the consistency of time zone data exchange between Micronaut-based services, directly resolving a previously reported issue with time zone representation.