Toby developed the SMT-LIB2 Parser Context API for the Z3Prover/z3 repository, introducing a new parser_context class in C++ to streamline the parsing of SMTLIB2 commands and manage sort and function declarations. His approach centralized parsing state, improving both reliability and extensibility for future SMT-LIB2 features. By focusing on robust API design and adhering to the SMT-LIB2 standard, Toby established a solid foundation for ongoing parser enhancements. The work demonstrated strong skills in C++ development, software engineering, and Git-based workflows, delivering business value through improved parser reliability and facilitating faster integration of new SMT-LIB2 capabilities in the codebase.