Built a Web3 live-streaming platform with Turborepo, Next.js, and Shaka Player, deployed on Vercel and Cloudflare. Integrated the Keplr multi-chain wallet to support blockchain features. Developed a global map-monitoring app with geospatial visualization. Built a multipart video-upload and highlight-detection service. Improved Lighthouse metrics, including reducing TBT by 2 seconds. Collaborated with designers on UI/UX, reviewed PRs, and contributed to technical knowledge-sharing sessions.

Built a marketplace platform from scratch and developed a responsive UI/UX across devices. Collaborated with backend engineers to design APIs, worked with designers to improve usability, and built reusable components for post creation, comments, and reactions. Applied SSR, streaming, lazy loading, and SEO optimization.

Developed and maintained web apps for a large-scale financial ecosystem across five projects: three existing and two new. Built complex dynamic forms for user management and data handling. Refactored legacy logic into reusable hooks, proposed a GraphQL type-definition approach that reduced TypeScript redundancy, and collaborated with backend engineers to design effective API structures. Worked in Agile teams using Jira, Git, and CI/CD.

Developed a cross-platform news and loyalty app for Canalis Club, enabling customers to earn points, access discounts, and receive event notifications. Implemented Google and Apple social login with a custom authentication flow. Integrated Firebase Cloud Messaging for push notifications. Built a custom map-marker feature to display club locations. Added multilingual support in Vietnamese and English. Built a web-based admin panel to manage users, promotions, and notifications.