Developed and delivered a targeted feature enhancement for the sj-distributor/SmartTalk repository, focusing on the AiSpeechAssistantService to improve knowledge management and multilingual language handling. Leveraged C# and backend development skills to implement updates that enable more effective knowledge retrieval and support for multiple languages within the AI assistant. The work involved refining service logic and updating core components to streamline knowledge access, aligning technical improvements with business needs for smarter assistant interactions. Emphasized rapid iteration and safe deployment practices, ensuring that enhancements could be delivered efficiently while maintaining quality. Demonstrated expertise in AI integration and backend service architecture throughout the project.