Worked on stabilizing the Zephyr MQTT Secure Demo in the zephyrproject-rtos/zephyr repository by addressing a build-time regression that prevented successful compilation on the adi_eval_adin1110ebz reference hardware. The solution involved identifying and adding missing POSIX libraries required for the secure MQTT demo, which restored build reliability and enabled faster validation of secure networking features. Additionally, reorganized the library includes in alphabetical order to enhance maintainability and align with project conventions. This work utilized C programming and embedded systems expertise, with a focus on network programming, and contributed to smoother development and testing cycles for secure IoT demonstrations.