Worked on enhancing cross-platform portability for the open-telemetry/opentelemetry-cpp repository, focusing on resolving build issues specific to the ESP32 platform. Addressed a critical bug by standardizing integer types to int32_t in key header files, which eliminated discrepancies in fixed-size integers across different targets. This change improved build stability and reduced platform-specific maintenance overhead. The solution was implemented as a targeted BUILD patch using C++ and leveraged expertise in build systems and embedded systems. The work demonstrated careful attention to platform compatibility and contributed to a more robust codebase, although the primary focus during this period was on bug resolution rather than feature development.