Worked on delivering TypeScript type definitions for the SecureElements API within the payu-emea-sdk, focusing on enhancing type safety and maintainability for developers. The work involved refactoring the existing type structure into modular files, which improved code organization and reusability. Integrated these type definitions into the DefinitelyTyped repository, ensuring broader community access and compatibility. Comprehensive tests were added to validate the typings and API usage, reducing the risk of regressions and supporting robust development workflows. The project leveraged skills in API design, TypeScript, and type definitions, emphasizing cross-repository collaboration and a methodical approach to improving SDK reliability and developer experience.