Sudesh worked on the zephyrproject-rtos/mcuboot repository, focusing on enhancing cross-toolchain compatibility for embedded systems. He addressed a critical bug related to struct packing when building with the IAR compiler by implementing a conditional STRUCT_PACKED macro in the image.h header. This solution ensured that image headers were correctly packed, preventing potential data corruption or misinterpretation across different toolchains. Using C and leveraging his expertise in compiler compatibility, Sudesh validated the fix across multiple toolchains, reducing risk for customers relying on IAR. His work included thorough documentation, supporting future maintenance and traceability within the embedded firmware development process.