Professional Work History
Full-stack web and mobile engineering across enterprise platforms, event systems, and Web3 products
(주)모멘티
Senior Software Engineer & Team Lead
Current RoleLeading web and mobile engineering for enterprise, exhibition, government, and public-sector platforms across Korea.
Key Outcomes
- Built reusable web/mobile boilerplates and shared component systems adopted across company projects, reducing delivery time by 30%
- Led frontend architecture and engineering workflows using React, React Native, Next.js, and TypeScript
- Conducted code reviews, technical mentoring, and internal engineering seminars to improve team quality and onboarding
- Developed role-based systems for admins, clients, event managers, and mobile users
- Managed CI/CD pipelines, deployments, and cross-functional collaboration across product, design, and engineering teams
- Delivered platforms for automotive, electronics, food, enterprise, and government/public-sector clients
- Built large-scale exhibition systems supporting 100,000+ concurrent users across high-traffic events
- Developed mobile event services with mapping, QR, and event-management features used by 15,000+ attendees
- Maintained production systems serving 20,000+ users with zero critical outages during tenure
Tech Stack
Shipped production systems for high-traffic enterprise and exhibition platforms while improving delivery speed and engineering quality.
Skills: Team Leadership, Frontend Architecture, Mobile Application Development, CI/CD, Enterprise Platforms, React Native, Next.js, TypeScript
CryptoCare
Full Stack Engineer
Built cross-platform crypto products with mobile, web, backend, and blockchain integrations.
Key Outcomes
- Built cross-platform mobile and web apps with React Native, React.js, Next.js, and Node.js/Express backends
- Integrated Ethereum smart contracts, crypto wallets, and blockchain transaction flows into production
- Optimized REST API performance for wallet and transaction workflows
- Mentored junior developers on architecture standards and implementation quality
Tech Stack
Skills: Blockchain Development, Crypto Wallets, Ethereum, Smart Contracts, React Native, Node.js, REST APIs
NiaLabs
Mobile & Web Developer
Delivered Web3 products across NFT, wallet, metaverse payment, and DeFi workflows.
Key Outcomes
- Delivered NFT marketplace, wallet systems, and a metaverse payment solution end-to-end
- Implemented DeFi smart contracts and Web3 integrations using React, React Native, NestJS, and Python
- Built crypto wallet flows for secure asset movement and production-grade blockchain interactions
- Contributed to Web3 product architecture across mobile, web, backend, and smart-contract layers
Tech Stack
Built production Web3 systems spanning marketplace, wallet, and metaverse payment experiences.
Skills: Web3 Engineering, NFT Marketplace, Wallet Systems, Smart Contracts, DeFi, React Native, NestJS, Python
VizaMaster
Full Stack Developer
Built an enterprise visa-processing platform with document workflows, RBAC, multilingual content, and a 3D interactive client portal.
Key Outcomes
- Automated 70% of agency operations through an enterprise platform with RBAC and document workflows
- Reduced client processing time by 40% with application tracking and structured admin flows
- Built a 3D interactive client portal using Next.js, TypeScript, and Three.js
- Delivered PWA, SEO, multilingual support, and analytics for a public-facing platform serving 5,000+ clients per year
- Designed serverless backend architecture on Cloudflare Edge and Neon PostgreSQL for global low-latency delivery
Tech Stack
Transformed agency operations with measurable processing, automation, and client-service improvements.
Skills: Enterprise Architecture, Serverless, Edge Computing, Three.js, Next.js, PostgreSQL, Cloudflare, PWA, RBAC
Selected Projects
A focused sample of shipped work across web, mobile, enterprise platforms, and Web3 systems.
Web & Full Stack
- Medical exhibition platform with real-time data, high traffic, and zero-downtime launch requirements
- High-traffic B2B event systems for Korean enterprise and exhibition operators
- E-commerce and content platform for a national retail business
- Agency operations system serving 5,000+ clients/year with document workflows and RBAC
- Corporate website rebuild that improved organic traffic by 120%
- Enterprise admin system for millions of records with analytics and role management
Mobile
- Event mobile app with maps, QR, step tracking, and data sync for 15,000+ attendees
- QR-based check-in system that reduced event entry queues by 80%
- SLAM-based iPhone scanning with a Three.js point-cloud desktop viewer
- In-car entertainment app with automotive-optimized interaction flows
- Global Web3 crypto wallet with 10,000+ active users
Blockchain & Web3
- NFT marketplace and wallet system with Ethereum and DeFi smart contracts
- Crypto wallet management platform with on-chain transactions across mobile and web