Worked on the PyBaMM repository to deliver a refactor of the project’s dependency management structure, focusing on improving maintainability and clarity. The approach involved migrating both development and documentation dependencies into organized dependency groups using Python, which streamlined the management of requirements across development, documentation, and CI pipelines. This restructuring clarified the boundaries between development and documentation tooling, reducing environment drift and simplifying onboarding for new contributors. By establishing a scalable foundation for multi-group dependency management, the work made future updates more straightforward and reproducible. The effort emphasized Python development, dependency management, and documentation practices to enhance project sustainability.