Sander Smeets developed a reusable data download framework for the FormingWorlds/PROTEUS repository, focusing on improving reliability, performance, and maintainability. He refactored the existing download logic into a centralized function, streamlining dataset retrieval and simplifying future onboarding of new data sources. Leveraging Python and techniques such as functools.cache, Sander optimized performance by reducing redundant data fetches and computation. He also restored user-facing progress feedback using print statements, enhancing transparency during long-running operations. His work demonstrated strong skills in code optimization, data management, and debugging, delivering a maintainable solution that supports both operational needs and downstream data pipelines.