- Initiate and implement a scalable large language model-powered chatbot system integrated with OpenAI to answer hotel-related questions without human intervention.- Designed a hotel recommendation system based on free-text queries using text embeddings- Designed and Developed a scalable hotel room recommendation system based on customer search criteria- Improved hotel search filtering on the web application by revamping the UX/UI

- Enhanced and implemented new user interface architectures for 4 startup companies by improving frontend development processes and design requirements.- Developed end-to-end responsive web applications for 10 companies on user interface improvement, performance optimization, data communication, and scalable infrastructure.

- Proposed and implemented the new frontend technologies to enhance the maintainability of the legacy system- Innovated a new design system architecture for an organization

- Designed and implemented a new scalable microservices architecture for new mutual fund accounts by using GraphQL and AWS Lambda, transforming 100% of paper-based to digital-based processes.- Developed features on the back office for a private fund management system that has over 300 million USD and 20,000 accounts by 4 people using NextJS, TypeScript, and NodeJS.- Initiated and implemented an API of a Jitta mobile application using GraphQL.- Built data pipelines for stock management, in 17 countries, on Managed Service on Google Cloud Platform.

- Built a new content editor system in SlimWiki product by using SlateJS and ReactJS.- Developed internet speed control system frontend in​​ digital mobile service product using ReactJS

- Improved booking chat system from using short polling method to Web Socket in order to reduce API request resources, by using NodeJS, Socket.io and ReactJS.- Built list activities page and trip detail page on TakeMeTour application supported Android and IOS platform using React Native.