During their work on the autowarefoundation/autoware.core repository, Steven Loretz focused on stabilizing and modernizing the build system, addressing both feature development and critical bug fixes. He improved dependency management by migrating GeographicLib discovery to a CMake Find module, simplifying configuration and enhancing robustness. Steven resolved build and compatibility issues in trajectory and localization modules, ensuring proper linking of pybind11 and updating deprecated tf2 headers. He also fixed YAML-CPP linking in test utilities, enabling reliable YAML support and improving CI stability. His work demonstrated strong proficiency in C++, CMake, and ROS, with a focus on maintainable, reliable build systems.