<Hello, world!>This is LeeJU.dev
Building the future of blockchain with 6+ years of experience in smart contracts, DeFi and interchain protocols, and backend systems for decentralized services.
Background
지난 6년 동안 다양한 체인 환경에서 스마트 컨트랙트를 개발해왔고, 그 과정에서 실전 배포와 보안 감사 경험을 꾸준히 쌓아왔습니다. DeFi와 인터체인(브릿지) 프로토콜을 설계하고 구현하면서, 온체인 보안 리스크, 권한 모델, 업그레이드 방식에 대해 실질적인 이해를 갖게 되었습니다. Account Abstraction을 비롯한 새로운 기술들을 프로젝트에 적용해왔으며, Solidity 최적화와 보안 감사를 고려한 개발을 중요하게 생각합니다. 항상 공격자의 관점에서 시스템을 점검하고, 신뢰 없는 환경 위에 신뢰를 구축하는 코드를 만드는 것을 목표로 하고 있습니다.
Over the past six years, I’ve been developing smart contracts across various blockchain environments, gaining hands-on experience with real-world deployments and security audits. While working on the design and implementation of DeFi and interchain (bridge) protocols, I’ve built a practical understanding of on-chain security risks, permission models, and upgradeability. I’ve also applied newer technologies like Account Abstraction in production, and place strong emphasis on Solidity optimization and audit-conscious development. My goal is to write code that builds trust in trustless systems, always considering how things might break—from an attacker’s point of view.
Experience
Blockchain Developer
Highdraw.
Designing and developing services operating on Silicon Chain, including Account Abstraction and Launchpad protocols.
Smart Contract Developer
Ozys.
System design and implementation for DeFi and Interchain protocols
Smart Contract Developer
DXM corp.
Designed and developed the staking protocol for Upbit Staking Beta service.
Internship
TEEware.
Designed and developed a demo Web3 wallet
Bachelor of School of Computing
KAIST (Korea Advanced Institute of Science and Technology)