Work
  • Dec 2022 - Jan 2025
    Grip Company
    Frontend Developer

    Company info:
    Grip is a live commerce startup founded in 2018, headquartered in Seongnam, South Korea.
    The platform connects sellers and consumers through interactive real-time video shopping.
    By 2020, Grip hosted 700+ daily live broadcasts, with 10,000+ sellers and 68,000+ products. It expanded services to the U.S. in 2022.

    • Website: gripcorp.co
    • Employees: ~100–200 (startup scale)

    Experience:
    Owned frontend development for Grip Web Service (PC/Webview) and Admin 2.0, focusing on performance and user engagement.
    Stack: Next.js, TypeScript, Zustand, SCSS, Tailwind CSS, pnpm, Firebase.

    • Built 6+ major pages: My Page, Point History, Order Completion/Failure/Pending, Hot Deal
    • Designed promotional tab component with paginated content (12 per tab) → faster load & lower bounce rate
    • Replaced MUI with Tailwind CSS → reduced bundle size & improved LCP
    • Implemented “Send Support” feature for live commerce using Firebase + CSS animations
    • Contributed ~30% to Admin 2.0 by building menu systems and reusable Chakra UI components
    • Applied modular design for rapid API/UI change adaptability
  • May 2021 - Nov 2022
    Wemakeprice
    Frontend Developer

    Company info:
    Wemakeprice (위메프) is a leading e-commerce and social commerce platform in South Korea, founded in 2010.
    Headquartered in Gangnam, Seoul, it offers daily deals, online retail, and digital services.
    As of 2025, the company has raised $85M in funding and was valued at ~$2B.

    Experience:
    Modernized commerce services with React, TypeScript, Vue.js, and Recoil.
    Migrated legacy JSP to React and enhanced partner/booking systems.

    • Migrated ~20% of admin back-office pages to React with reusable components
    • Enhanced W Travel & Leisure (PC/Mobile/App) with KakaoPay integration & async loading
    • Improved partner admin with discount participation, ad center integration, and file uploads
    • Maintained Vue-based 1:1 chat service, fixing file attachment and reliability issues
  • Jul 2020 - Apr 2021
    DK Techin (a Kakao company)
    Web Developer

    Company info:
    DK Techin was founded in 2015 as part of Kakao’s ecosystem, specializing in system integration, AI, and enterprise IT services.
    Headquartered in Seongnam, South Korea, it provided B2B solutions such as Kakao Work and smart government broadcasting systems.
    In 2024, DK Techin merged with Kakao Brain to expand AI-based service offerings.

    • Website: (no standalone site, merged into Kakao Brain)
    • Employees: ~300+ (before 2024 merger)

    Experience:
    Worked on K-PICK (procurement bidding system) and T-koop (asset management system).
    Handled both frontend and backend using Vue.js, Java, Spring Framework.

    • Contributed ~30% of core feature development in both systems
    • Integrated external e-signature APIs and implemented post-contract evaluation
    • Built Excel export and quotation creation features
    • Optimized data workflows and customized UI for enterprise use
  • Jan 2019 - Jun 2020
    ECO
    Web Developer

    Developed a Library Management System as a web-based solution.
    Built with Java, jQuery, JavaScript, MyBatis, and MySQL, I was solely responsible for the entire development lifecycle without planners or designers — from requirement analysis and architecture design to implementation and deployment.

    • Implemented core features such as book lending/return, member management, and catalog search
    • Designed and optimized SQL queries with MyBatis integration
    • Built administrator-facing UI with jQuery for interactive workflows
    • Independently managed project scope and delivery without external planning or design support