Worked on the zarr-developers/VirtualiZarr repository to address stability and data integrity in coordinate handling. Focused on resolving a critical bug related to group coordinates parsing when provided as space-separated strings, ensuring correct variable promotion and robust validation. Enhanced the validation process for both coordinates and data variables, reducing the risk of regressions in downstream analytics workflows. Applied automated pre-commit continuous integration fixes to maintain consistent code quality and repository hygiene. Utilized Python as the primary language, leveraging data validation techniques and unit testing to reinforce reliability. The work emphasized careful attention to detail and sustainable engineering practices throughout.