Developed a Zigbee sub-driver for Sombra Shades integration within the SmartThingsCommunity/SmartThingsEdgeDrivers repository, focusing on backend development for IoT window treatment devices. The work involved implementing device fingerprinting and position-based motion tracking lifecycle handlers using Lua, enabling accurate shade state reporting and power source monitoring. Integration and settle-timer tests were added to validate device behavior and ensure reliability under mock-time conditions. Corrections to sub-driver logic and model identifiers improved compatibility, while restored fingerprints maintained support for related models. These enhancements increased onboarding efficiency, state accuracy, and energy monitoring visibility for Zigbee shade devices, reflecting a thorough and methodical engineering approach.