Over a two-month period, this developer contributed to the camunda/camunda and aws/s2n-tls repositories, focusing on reliability and maintainability in back end systems. In camunda/camunda, they addressed a null-safety issue in Java by preventing NullPointerExceptions during BPMN BoundaryEvent processing, adding regression tests to ensure robust workflow execution. For aws/s2n-tls, they improved code hygiene in C by removing unused read-only buffer allocation functions, simplifying TLS code paths and reducing maintenance overhead. Their work emphasized code refactoring, software maintenance, and unit testing, resulting in more stable production environments and a cleaner baseline for future development and onboarding.