Thomas Kadauke enhanced WebSocket handling in the home-assistant/core and home-assistant/supervisor repositories, focusing on improving reliability for large payloads. He increased the WebSocket message size limit to 16MB in the Hass.io ingress proxy and removed the message size cap in supervisor by configuring aiohttp’s max_msg_size, preventing silent drops for large add-on messages. These backend improvements, implemented in Python using asyncio and WebSocket technologies, addressed issues with dropped connections and improved stability for data-intensive integrations such as Zigbee2MQTT. The work demonstrated a deep understanding of backend systems and effective cross-repository collaboration to deliver robust, maintainable solutions.