Portfolio
A comprehensive collection of my projects and professional collaborations
Projects
Full-stack applications and mobile games built from concept to production
BKRS.io - Social Platform for Crypto Community
Full-Stack Developer • Oct 2024 - Aug 2025
Developed and deployed full-stack social platform serving 7,200+ users with 63k+ feeds and 660k+ interactions. Built from concept to production with focus on Korean crypto community needs.
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demouser
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- Platform Development & Scale
- • Built and scaled social platform to 7,200+ active users with 660k+ interactions through strategic database migration from PostgreSQL to MongoDB
- • Implemented performance optimizations reducing query times by 60% via indexing and aggregation pipelines, plus pagination cutting load time from 5s to <500ms
- Core Features & Architecture
- • Developed Time Decay Factor algorithm for intelligent content ranking, increasing user engagement by 30% alongside secure session-based authentication with role-based access control
- • Created comprehensive image upload system with AWS S3/CloudFront integration and RESTful API architecture with standardized error handling
- Code Quality & Deployment
- • Built reusable React components reducing code duplication by 15% and deployed scalable application using Vercel/AWS Elastic Beanstalk
- • Gained end-to-end ownership experience with full-stack development lifecycle - seeking to apply skills in collaborative team environment
MoBlock2 - Mobile Block Puzzle Game
Game Developer (Personal Project)
Self-directed mobile puzzle game project showcasing cross-platform development skills and rapid learning ability. Published on both iOS and Android, reaching #183 in Korean App Store Puzzle category.
- Project Outcomes
- • Published cross-platform mobile game achieving #183 ranking in Korean App Store Puzzle category
- • Successfully deployed to both Google Play Store and Apple App Store within development timeline
- • Gained 600+ downloads demonstrating market validation and user engagement
- Technical Development
- • Self-taught Unity Engine and C# from scratch, demonstrating rapid technology adoption
- • Implemented complex game mechanics: strategic gameplay, progression systems, and achievement tracking
- • Built dual leaderboard system with weekly UTC-based scoring and 251-level achievement progression
- • Optimized mobile performance ensuring smooth gameplay across various device specifications
- Learning & Growth
- • Applied software engineering principles from web development to game development domain
- • Created maintainable, scalable code architecture supporting future feature enhancements
- • Gained experience with mobile app deployment processes and platform requirements
- • Developed cross-disciplinary skills bridging web and game development technologies
Crypto Faucet - Blockchain Learning Platform
Full-Stack Developer (Personal Project)
Developed educational blockchain faucet enabling users to experience Web3 technology risk-free. Built to help newcomers understand blockchain fundamentals through hands-on interaction with testnet environments.
- Web3 Development
- • Integrated MoTe Blockchain network with Bitcoin-compatible address system
- • Implemented transaction signing and broadcasting using Bitcoin-JS library
- • Connected to Electrum server for real-time blockchain communication and status updates
- User Experience Design
- • Created beginner-friendly interface with step-by-step blockchain interaction guides
- • Implemented claim tracking system using localStorage with UUID-based user identification
- • Built comprehensive educational content and safety disclaimers for new users
- Key Learning Outcomes
- • Gained practical experience with blockchain development and Web3 integration
- • Understanding of cryptocurrency wallet functionality and transaction processes
- • Experience with real-time data fetching and state management in blockchain applications
Professional Collaborations
External collaborations with companies and development teams
Technical Contributor (Contract)
Mobickers - BTCMobick Blockchain
Invited by CTO to integrate real-time Korean Won currency conversion into a forked BTCMobick blockchain mempool explorer, successfully localizing the platform for the Korean market.
- Key Contributions
- • Developed real-time USD-KRW exchange rate API integration
- • Refactored AngularJS components for improved performance
- • Implemented seamless frontend-backend integration
- Impact & Results
- • Successfully localized international blockchain platform
- • Enhanced accessibility for Korean market users
- • Delivered on schedule under strict code quality standards