Worked on the metno/pyaerocom repository, focusing on stabilizing configuration management and improving data integrity in Python-based workflows. Addressed configuration handling by ensuring model-specific plot type settings were correctly propagated across model versions, centralizing version-aware logic to reduce duplication and misconfiguration. Enhanced maintainability by updating documentation and removing obsolete configurations after processing. In data handling, implemented targeted bug fixes for ungridded data processing, refining how appended data and moving-station altitudes are managed to prevent data loss or corruption. Leveraged Python and software development best practices to deliver more reliable reporting outputs and robust data workflows, supporting accurate downstream analysis.