Frontend Dev · Builder · Shipper · Problem Solver
Minyoung JUNG
I turn ideas into real products, fast, clean, and relentlessly.
From zero to production.
About
I started my career as a UI/UX designer and now work as a blockchain developer specializing in frontend and smart contract development.
I have built and shipped NFT, DeFi, and GameFi products, working across the stack from user experience to smart contracts. I actively attend global Web3 conferences including KBW, TOKEN2049, Paris Blockchain Week, EthCC, and NFT Paris, connecting with teams and builders in the ecosystem.
I communicate in Korean, Japanese, English, and French.
Languages
Tech Stack
Experience
Jan 2026 — Present · Hybrid / Seoul, Korea
1. xD Vault
- Built dashboards and monitoring interfaces for vault performance and live APY tracking
- Implemented time series data visualization and performance analytics using Recharts
- Built Deposit, Dashboard, and portfolio analytics features using Next.js, Wagmi, and Jotai
- Designed and implemented responsive UI optimized for high frequency data updates and real time interactions
- Built backend services for real time data aggregation and multi protocol yield calculations
- Developed cross chain data querying and log monitoring tools
- Integrated RESTful APIs and external services for data synchronization
2. A2A Swap (P2P OTC Token Swap Protocol, npm Package & CLI)
- Built landing page using Next.js 16, React 19, and Tailwind CSS v4
- Implemented interactive UI and terminal demo components to visualize CREATE2 based escrow swap flows
- Designed React Server Components architecture to optimize client bundle size
- Built Fastify based REST API server and Supabase integrated data layer
- Designed and implemented stateless authentication using EIP-191 signatures and onchain reputation system
- Built operator automation loop for escrow deposit monitoring and automatic settlement
- Developed CREATE2 escrow factory smart contract in Solidity and deployed on Base
- Published CLI and TypeScript SDK as npm packages for programmatic swap interaction
3. Common
- Designed and implemented authentication and authorization logic
- Built reusable component architecture and state management structure for scalability
- Optimized performance for real time rendering and high throughput environments
- Ensured cross browser compatibility and responsive behavior across devices
- Ensured data consistency and system stability across frontend and backend systems
Jul 2025 — Dec 2025 · Seoul, Korea
- Built web applications integrating frontend and backend systems
- Designed and implemented voting and reward based interaction systems
- Implemented REST API integration and asynchronous data handling
- Built wallet based authentication and transaction verification logic
- Built dashboards reflecting real time user interactions
- Ensured consistency between UI behavior and backend system logic
Jul 2025 — Dec 2025 · Seoul, Korea
(Concurrent projects under the same organization)
- Designed and implemented backend logic for transaction processing and validation
- Built automated processes for data validation and state management
- Designed and implemented minting and redemption processes
- Performed testing and deployment across multiple environments
- Improved system stability and security through debugging and validation
Jul 2024 — Dec 2024 · Remote
- Improved UI and UX of a liquid staking platform
- Built responsive web interfaces using React, TypeScript, and TailwindCSS
- Implemented staking related features and user interaction flows
- Optimized component performance and rendering efficiency
- Ensured responsive design across multiple devices
- Managed shared modules and components in a monorepo environment
Jan 2023 — Jul 2024 · Paris, France / Remote
1. Artos (NFT Marketplace for Physical Art)
- Built marketplace UI and asset discovery interfaces
- Implemented transaction flows and payment handling logic
- Built filtering, sorting, and responsive UI
2. Securd (DeFi Lending Platform)
- Built lending and borrowing interfaces
- Integrated backend systems and smart contract interactions
- Supported chain migration and ensured system stability
3. Bloometa (Gaming Marketplace)
- Improved trading flows and user experience
- Optimized filtering systems and application performance
- Refactored UI components for maintainability
4. Defit (Move to Earn Platform)
- Built NFT minting and reveal interfaces
- Connected user activity data with reward systems
5. Kboom (Esports Fan Platform)
- Built user and admin dashboards
- Implemented user engagement features
6. Intercellar (Wine NFT Platform)
- Built purchase flows for fiat and crypto payments
- Implemented asset management and ownership interfaces
7. Mocaverse (Animoca Brands NFT Project)
- Built eligibility, minting, reveal, and upgrade interfaces
- Integrated frontend with onchain systems
Mar 2022 — Dec 2022 · Paris, France
(Part of PyratzLabs ecosystem, transitioned to PyratzLabs afterwards)
- Led redesign of landing page to improve usability and engagement
- Built NFT minting, reveal, and staking interfaces
- Built merchandise purchase flows with token based payments
- Maintained and improved marketplace features
- Improved performance through debugging and optimization
Apr 2013 — Aug 2016 · Tokyo, Japan
- Led UI improvements and feature planning across web and mobile services
- Designed campaign and promotional pages
- Conducted A/B testing and user behavior analysis
- Improved cross device experience through responsive design
- Built HTML and CSS prototypes
- Produced UI assets using design tools
Projects
Mar 2026 — Present
BTC Futures Automated Trading System
(Python, CCXT, Supabase, Telegram Bot API, Railway)
- Designed and implemented automated trading logic based on 16 signals
- Built Telegram bot for real time alerts and command based interaction
- Built data pipeline using Supabase for market data collection and trade logging
- Integrated multiple exchange APIs and built order execution system
- Designed ATR based risk management logic
- Built deployment and monitoring system for 24 hour operation
Feb 2026
Multi Chain Wallet & CEX Asset Dashboard
(Next.js, TypeScript, Tailwind CSS, JSON-RPC, REST API, CoinGecko API, TzKT API)
- Built multi page dashboard using Next.js App Router
- Implemented parallel RPC calls across 9 EVM networks for real time balance tracking
- Integrated TzKT API for Tezos assets and NFT tracking
- Implemented USD and KRW conversion using CoinGecko API
- Built precise ERC20 calculation logic using BigInt
- Implemented sorting, filtering, and interactive UI for asset management
- Built RPC monitoring and network health check UI
- Designed multi chain structure and wallet tagging system
- Built CEX asset tracking and staking visualization features
Jan 2026
Personal Finance Dashboard & Telegram Automation
(Next.js, TypeScript, Tailwind CSS, Supabase, TanStack Query, Jotai, Recharts, Telegram Bot API, GPT-4o Vision, Vercel Cron)
- Built financial dashboard using Next.js, Supabase, TanStack Query, and Jotai
- Implemented multi currency transaction system supporting KRW and EUR
- Built budget tracking and category based analytics using Recharts
- Built automation pipeline using Telegram Bot and GPT Vision for receipt parsing
- Implemented daily report automation using Vercel Cron
- Designed transaction classification and real time balance logic
- Implemented mobile first UI and Supabase RLS based authentication
Education
Jan — Jun 2025 · Seoul, Korea
- Completed an advanced program focused on smart contract development and blockchain architecture.
- Built practical dApps using Solidity, Hardhat, Web3.js, and Ethers.js while studying core Web3 concepts such as gasless transactions, token approvals, and smart contract security.
2021 — 2022 · Paris, France
- Web Development Bootcamp (RNCP Level 6, equivalent to Bachelor +4).
- Completed an intensive full stack web development program covering frontend and backend technologies, winning first place in two of three final projects.
2016 — 2017 · Paris, France
- Diplôme de Pâtisserie Supérieure
2009 — 2013 · Hyogo, Japan
- B.A. in International Law and Legal Studies
- Awarded JASSO and Hyogo Prefecture scholarships for three consecutive years.