During February 2025, Treister focused on improving build stability for the espressif/esp-rainmaker repository by addressing a critical pointer and type mismatch in the esp_rmaker_report_info function. Using C programming and embedded systems expertise, Treister resolved compilation errors by passing the key_name pointer directly to snprintf and json_gen_obj_set_* calls, ensuring the fix preserved existing runtime behavior. This targeted firmware development work reduced build failures and streamlined future maintenance without introducing regressions. The solution demonstrated careful pointer management and safe API usage, contributing to more reliable integration of ESP Rainmaker and supporting ongoing development in embedded C environments.