Worked on the spring-grpc repository to enhance backward compatibility for legacy gRPC BlockingStub types, focusing on smoother upgrades for downstream clients. Addressed compatibility issues by expanding the BlockingStubFactory.supports method and refactoring conditional logic to recognize a broader range of stubs ending with 'BlockingStub.' This Java development effort improved library compatibility and reduced the risk of breakages when supporting older gRPC versions. The work included targeted bug fixes, code maintenance, and formatting improvements to maintain code quality and consistency. Leveraged skills in Java and gRPC to ensure the codebase remains robust and adaptable for evolving client requirements.