* Blockchain Wallet Management System 2023.04 - Present * System Management & Integration * Manage and integrate new features on blockchain wallet manage system for global crypto exchange service * Realtime deposit and withdrawal of various types of crypto assets* Blockchain Node Management System 2023.04 - Present * System Design & Development * Design and develop fullstack MSA application to manage distributed docker containers * Operate reverse proxy server to serve blockchain node rpc endpoints * Design and develop auto failure detection and revision mechanism

* Windee - NFT/STO Market & Guardee - Decentralized Cryptocurrency Wallet 2021.12 - 2022.11 * Planning & Development Lead * System design and development of decentralized apps such as NFT/STO market and crypto wallet * Smart contract design and development * Implementation of DID signing and payment system * Development of blockchain observers for blockchain application services * Development of automated token trading system * Tech : NodeJS, NestJS, Web3, PHP, MySQL, Memcached, Apache Cordova, HTML, CSS, AWS* SASEUL 2.0 – Blockchain Engine 2021.09 - 2022.11 * Blockchain engine design review & Blockchain SDK development and documentation * Implementation of cross-chain features in the blockchain engine * Development and documentation of blockchain SDK libraries * Tech : PHP, Docker, NodeJS

* Itemverse SDK – Unity VSP Asset 2021.05 - 2021.09 * Project Management * Management of project launch process on Unity Verified Solutions Partner Asset Store * System design and Development of blockchain SDK APIs * Cross-chain token exchange smart contract development* Tech: NodeJS, Web3, PHP, Unity

* Wantit - Online Peer-to-Peer Used Phone Trading Platform 2020.10 - 2021.04 * Product Trade Management System Development * Dynamic product querying system development * Refactoring PHP application into Single Page Application * Tech : PHP, JavaScript, CSS, HTML, MySQL

* Cheondudong – A Map of Military Village Dongducheon &Dongducheon Open Archive - Local History Online Archive &Pyeongsang – Local Culture Online Archive &DoongDoong – Local Community Web Magazine 2020.06 - 2020.12 * Planning & Design & Full-Stack Development * Development and deployment of CMS for local community projects * Development of permission segregation system based on administrator roles * Tech : PHP, HTML, CSS, JavaScript, AWS Lightsail * Non-Developer Role: Photography, Fieldwork, Interview

Technical Support, Web Development, Administrative&Account

* Program planning and execution for Cultural Urban Regeneration * Jungang-dong Alley Explorers

* DMZ Peace Human Chain Movement Headquarters Assistant Administrator * Media Monitoring * Google Maps Operation * Data Archiving * NGO Operation

* Research of Pine Wilt Disease Vector Insect Ecology * Correlation between density of Monochamus spp. with Bursaphelenchus xylophilus and distance from pine wilt disease affected area interface * D Ohn, C Han, UG Lee, C Jung 2018 년 작물보호분야 공동 국제학술대회, 498-498 * Determination of pine wilt disease propagation ability of Monochamus alternatus after applying thiacloprid in Pinus densiflora * UG Lee, M Kim, D Ohn, S Hwangbo, C Jung * 2018 년 작물보호분야 공동 국제학술대회, 391-391 * Establishment of direct injection system for artificial retention of Bursaphelenchus xylophilus to Monochamous alternatus * UG Lee, JO Park, D Ohn, HJ Kwon, M Kim, CS Jung * 2018 한국응용곤충학회 춘계학술발표회 및 국제컨퍼런스, 125-125

* Comparative Studies for Ancient and Modern Historical·Written Materials Related to Koreanology in the Middle East * Academic data research * Media information research * Overseas fieldwork (Uzbekistan)

Ministry of National Defense Agency for KIA Recovery and Identification Sergeant(Identification)