Kevin Nelson developed and integrated a straw tube tracker detector within the ALLEGRO simulation framework in the key4hep/k4geo repository. He implemented the detector’s geometry using C++ and Geant4, updated XML configuration files for seamless integration, and modified existing tests to ensure comprehensive coverage of the new component. This work enhanced the simulation’s realism, supporting more accurate downstream physics analyses and providing a modular pathway for future detector additions. By focusing on C++ development, detector simulation, and CMake-driven builds, Kevin delivered a complete end-to-end feature that improved modeling fidelity and accelerated validation cycles within the repository’s simulation environment.