In January 2025, Jadrian contributed to both the google/fuzztest and libsdl-org/highway repositories, focusing on platform-wide improvements. He developed new input-domain support for fuzzing by implementing ElementOf for std::array types in fuzztest, converting arrays to vectors to leverage existing logic and simplify enum domain definitions. In highway, Jadrian removed the AVX3_DL opt-in requirement, enabling runtime dispatch by default and updating both documentation and code to reflect this change. His work demonstrated depth in C++ and low-level optimization, with careful attention to compiler intrinsics and metaprogramming, resulting in more flexible and maintainable codebases without introducing regressions.