Pete Todd contributed targeted engineering work to both the bitcoin/bitcoin and rust-lang/rust repositories, focusing on functional testing and documentation quality. In bitcoin/bitcoin, Pete developed comprehensive OP_RETURN mempool acceptance tests using Python and Rust, covering scenarios with multiple outputs, large payloads, and edge-case transactions near standard weight limits. This improved the reliability of mempool logic and ensured alignment with Bitcoin protocol standards. In rust-lang/rust, Pete clarified API documentation for vtable_for, correcting parameter descriptions and reinforcing safe usage. His work demonstrated depth in both protocol-level testing and documentation, enhancing codebase reliability and reducing onboarding friction for new contributors and maintainers.