Leading frontend development of Humanlog.io observability platform. Built high-performance data visualization with D3.js, design system, and developer-centric debugging workflows.

Led frontend development of three e-commerce services. Redesigned architecture with Atomic Design, established Git Flow and code review processes, achieved successful launch of Health Price service.

Developed crypto exchange web/app services. Built Flutter hybrid app with FCM push notifications, optimized rendering performance and refactored legacy code.

Developed multiple web services including corporate websites, admin dashboards, and e-commerce platforms. Built shared component libraries and animation systems for team collaboration.

Designed and developed real-time reservation system for pet healthcare service. Architected Firebase-based data structure and built intuitive appointment management system.