Worked on the hibernate/hibernate-orm repository to enhance the reliability of Hibernate ORM’s query layer by addressing the handling of temporal types in JPA queries. Focused on expanding test coverage for null value bindings of date and time parameters in both JPQL and native SQL, the work aimed to ensure correct behavior and prevent regressions when dealing with null temporal parameters. Leveraged Java, Hibernate, and JPA to implement comprehensive tests, validating the stability of the query path. This targeted bug fix improved maintainability and correctness, reflecting a methodical approach to quality assurance and robust testing practices within the ORM framework.