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Hogugu Booking Web is a multilingual, customer-facing web platform for booking relaxation-massage therapists, built with Next.js and TypeScript. As a Front-end Developer:

Built responsive, SEO-optimized pages with Next.js and Mantine UI

Implemented the multi-step booking flow, therapist search/detail, and customer "My Page" (booking history, payment cards, coupons, points, profile)

Integrated Firebase for real-time chat and Twilio Voice for in-app calling

Managed server state with TanStack Query and client state with Zustand

Delivered a multilingual experience across 5 languages (JA/EN/KO/ZH-CN/ZH-TW) with react-intl

SmartSalon POS is a cross-platform Point-of-Sale system for salon businesses, supporting iOS, Android, Web, and Desktop platforms using React Native (Expo) and Electron.

The system manages appointments, employee schedules, services, inventory, payments, and printer integrations. It's deployed in 10+ salon branches across the U.S., serving thousands of active users.

As a Front-end Developer, I built responsive UI using Gluestack UI and NativeWind, created shared modules across 4 apps in a monorepo architecture, and implemented features like real-time booking via SignalR and offline state with Redux Persist.

Front-end Developer experienced in building admin portals using ReactJS, Shadcn UI, and TailwindCSS. Developed and maintained key features for the SmartSalon Portal, including ticket management for sales/support teams, invoice handling, subscription tracking, user and salon management. Focused on delivering clean UI and seamless user experience for both agency and superadmin roles.

Developed dynamic, SEO-optimized landing pages for salon branches using Qwik and SSR. Enabled real-time theme customization via POS integration, and supported booking flows for both individual and group customers. Integrated responsive design principles to ensure smooth experience across devices.