Worked on expanding and strengthening test coverage and packaging reliability across ethereum/execution-specs and conan-center-index repositories. Ported BN254 elliptic curve addition tests from YAML to Python, improving maintainability and enabling more robust validation of cryptographic operations. Integrated Intx library version 0.14.0 into conan-center-index, updating configuration files to ensure accurate dependency management and compatibility for downstream projects. Extended testing for Ethereum’s EXTCODEHASH and EXTCODESIZE operations by porting self-reference static tests, focusing on edge-case behavior and early bug detection. Collaborated closely on code reviews and documentation, emphasizing Python, YAML configuration, blockchain protocols, and smart contract testing throughout the work.