Worked on the elastic/apm-agent-python repository to enhance the reliability of gRPC service monitoring by fixing host and port parsing in the GRPCClientInstrumentation component. Addressed issues with various host formats and port extraction, ensuring accurate metric reporting and reducing misreported data. Developed comprehensive unit tests in Python to validate the parsing logic and prevent future regressions, while maintaining alignment with pre-commit code quality standards. Collaborated closely with another contributor throughout the pull request process, emphasizing code hygiene and robust test coverage. Leveraged expertise in Python development, unit testing, and gRPC to improve observability and troubleshooting for distributed Python services.