Worked on enhancing serialization compatibility in the corda/corda repository by developing targeted tests for the NotaryChangeWireTransaction component. Focused on AMQP serialization, the work involved adding three comprehensive tests to verify both forward and backward compatibility, specifically addressing deserialization scenarios with and without the requiredSigningKeys field. This approach aimed to reduce the risk of regressions during future serialization changes and to improve interoperability with external clients and partners. Leveraged Java and Kotlin for backend development and testing, applying expertise in AMQP and serialization to expand test coverage and ensure robust, maintainable transaction processing within the Corda platform.