Martin Kraner enhanced the openDAQ/openDAQ core by implementing mutex encapsulation and improving thread-safety across core modules. He refactored the internal synchronization logic, moving all direct uses of the sync mutex into protected functions to reduce the risk of deadlocks and simplify future maintenance. This work focused on stabilizing concurrency for data acquisition workloads, ensuring more reliable and maintainable code paths. Using C++ and leveraging expertise in concurrency, mutex handling, and core library development, Martin’s changes addressed critical reliability concerns. The depth of the refactoring demonstrates a strong understanding of concurrent system design and its impact on long-term code quality.