Worked on the pasqal-io/Pulser repository to enhance data handling by refactoring serialization exception management and introducing a dedicated pulser.exceptions module. Focused on improving code organization and exception handling in Python, the work consolidated error paths for serialization and deserialization, ensuring more consistent error messages and simplifying debugging. By modularizing error handling, the changes improved maintainability and set a foundation for future extensibility. The refactor enhanced reliability and data integrity in serialization workflows, reducing edge-case failures and providing clearer developer feedback. This targeted feature addressed robustness and maintainability, demonstrating depth in refactoring and exception handling within a Python codebase.