Worked on the nim-lang/Nim repository to enhance cross-architecture compatibility, focusing on 32-bit RISC-V support within the Nim compiler. Addressed a critical bug by updating the compiler’s base header to ensure correct handling of 32-bit integers for RISC-V targets. The solution involved adopting long int built-ins in C to align with GCC’s int32_t semantics, thereby improving overflow detection and arithmetic correctness. This targeted fix improved portability and build reliability for embedded systems using RISC-V architectures. The work demonstrated a strong grasp of compiler development and low-level systems programming, emphasizing careful attention to cross-platform consistency and standards compliance.