Worked on development build performance and testing improvements across ProvableHQ/snarkVM and Syndica/sig. For snarkVM, optimized the Rust build process by disabling link-time optimization in development and test Cargo profiles, which accelerated local cargo run and test cycles and improved developer productivity. In Syndica/sig, expanded test coverage for core I/O utilities written in Zig, focusing on PeekableReader and Lazy components. Added comprehensive unit tests for various read scenarios and addressed a minor bug in Lazy’s return-value handling. Demonstrated skills in build system configuration, performance optimization, and software testing, contributing to more reliable and maintainable development workflows in both repositories.