Eli focused on enhancing build system reliability and cross-platform support across two open-source projects. For n0-computer/iroh, Eli improved ARM64 cross-compilation by explicitly configuring the aarch64-unknown-linux-gnu target to use the correct GCC linker, addressing persistent build failures and streamlining ARM-based development. In the expo/expo repository, Eli resolved a packaging issue by merging LICENSE files during the Expo Dev Client build process, ensuring license compliance and maintaining build integrity. Throughout both projects, Eli applied expertise in build system configuration and cross-compilation, working primarily with Gradle and TOML to deliver targeted, in-depth solutions to complex build and packaging challenges.