Frontend Developer with a passion for creating exceptional user experiences from South Korea 🇰🇷

Currently working at Mango Creative as the sole Frontend Developer for MangoDesk, a SaaS solution for marketing agency lifecycle management.

I specialize in React ecosystem and have expanded my skills to include cross-platform mobile development with React Native and full-stack capabilities using BaaS platforms like Firebase and Supabase.

• Leading frontend architecture for enterprise SaaS solutions
• Building scalable web & mobile applications with React/React Native
• Implementing high-performance data management systems

• 📚 Reading books and exploring new technologies
• 🎬 Watching movies and collecting stationery
• 🌏 Learning languages (Currently studying English and Japanese)
• 🎨 Creating user-centered designs that make a real impact

const seungoh = {
  languages: ["TypeScript", "JavaScript", "HTML5", "CSS3"],

  frontend: {
    frameworks: ["React", "Next.js", "React Native"],
    stateManagement: ["Zustand", "Recoil", "React Query (TanStack Query)"],
    styling: ["Tailwindcss", "shadcn/ui", "Framer Motion", "styled-components"],
    testing: ["Jest", "React Testing Library", "Storybook"],
    architecture: ["Monorepo", "Design System", "FSD"],
  },

  backend: {
    runtime: ["Node.js"],
    frameworks: ["Spring Boot", "Express"],
    baas: ["Firebase", "Supabase"],
    databases: ["PostgreSQL", "MySQL", "Oracle", "CUBRID"],
  },

  devOps: {
    cloud: ["AWS (EC2, Amplify)", "Vercel", "Firebase Hosting"],
    tools: ["Docker", "Git", "GitHub Actions"],
  },

  tools: ["Figma", "Cursor", "VS Code", "Claude Code"],

  currentChallenge: "Rapid A-to-Z app development leveraging AI tools",
  previousChallenge: "Building AI-powered chat service with novel characters",
};

May 2025 - Present | Frontend Lead Developer

• Leading frontend team for US/Korea simultaneous launch
• Architecting cross-platform solution (Web + Mobile)
• Building reusable component library and design system
• Implementing multi-language support system

Nov 2024 - May 2025 | Frontend Developer

• Developed web platform and launched iOS/Android apps using React Native
• Implemented personalized content recommendation system
• Achieved significant performance improvements in page load times
• iOS App | Android App

• Successfully refactored large-scale enterprise codebase to modern architecture
• Launched mobile app on App Store and Google Play
• Trained 3+ junior developers in React ecosystem