Developed and delivered the Radiotherm Climate Default Preset Mode feature for the mib1185/homeassistant-core repository, introducing a new 'default' preset to the Radiotherm climate component. This enhancement improved user configurability and streamlined workflows for common Radiotherm scenarios within Home Assistant. The work involved Python core development, careful attention to integration testing considerations, and disciplined use of version control. Collaboration was demonstrated through co-authorship, ensuring alignment with Home Assistant climate integration standards. No major bugs were reported or fixed during this period, reflecting a focused effort on feature delivery and maintainability using backend development and API integration skills.