Worked on generalizing the BBST data structure within the postechDNN repository to support custom comparator functions, enhancing its flexibility for broader use cases. The approach involved refactoring C++ code by removing legacy components and integrating template metaprogramming techniques to allow custom ordering logic directly in SimpleBBST.h. Project configuration was updated to target a newer Visual Studio version and Unicode character set, improving compatibility with modern toolchains. This work focused on increasing maintainability and reducing technical debt, enabling downstream components to leverage BBST more effectively. The engineering effort centered on C++ development, data structures, and advanced template programming concepts.