About Me
Blockchain Researcher & Engineer
Blockchain Engineer
About Me
Blockchain engineer, five years across Ethereum L2, smart contract security, and node infrastructure. Most of my recent work is on AI agent systems. I audit smart contracts, run on-chain analytics with Dune, and operate validator nodes across multiple networks. M.S. in Finance Security from Korea University.
Skills
Blockchain Development
Rollup submission-interval optimization, shipped to production
Node Executor install scripts across eight networks
Mapae: x402 v2 payments over ERC-7710 delegation
Caveat enforcers on EVM, four Anchor programs on Solana
Solidity and Anchor audits, EthCon Korea 2024 CTF track
Programming Languages
On-chain data pipelines, Dune analytics, ML prediction models
Engram on npm, 259 tests; Mapae end to end
Nerve v1.0.0: 7 crates, 608 tests, per-OS sandboxing
Delegation, caveat enforcers, prediction markets, vaults
Node operator tooling and deployment automation
Experience
Blockchain Researcher & Engineer
Graylab
- ✓ Researched blockchain protocols and consensus mechanisms across Ethereum, Solana, and Cosmos ecosystems
- ✓ Architected a non-custodial multi-chain wallet with secure key management and optimized asset handling
- ✓ Audited Solidity and Anchor smart contracts, identifying and resolving critical vulnerabilities
- ✓ Designed and implemented DeFi protocol mechanisms with a focus on secure smart contract architecture
Blockchain Researcher & Engineer
Onther
- ✓ Researched Ethereum Layer 2 scaling solutions and rollup optimization strategies
- ✓ Conducted cost-optimization research for efficient L2 operations and resource allocation
- ✓ Built Dune Analytics dashboards for on-chain token health monitoring and protocol analytics
- ✓ Developed and maintained blockchain node infrastructure and deployment tooling
Security Researcher & Engineer / Mobile Developer
JNH Security
- ✓ Developed a mobile software-defined perimeter (SDP) for secure network access
- ✓ Built a DMZ environment for cybersecurity training and penetration testing
Projects
DeFi & Prediction Markets
On-chain prediction markets, DEX clones, DeFi trading bots, and automated vault systems.
Node Infrastructure
Automated deployment scripts for 8+ blockchain validator and compute nodes.
On-chain Analytics
Dune dashboards, rollup data collection, and ML-based esports prediction pipelines.
Smart Contract Security
Audited 25+ DeFi contracts and built a static analysis tool with FastText similarity.
Education
Blockchain
Korea University
Master's Degree of Science in Finance Security
Camp Mamo
Celestia
Celestia Builder Bootcamp
Blockchain Security
Dreamplus & Theori
Dreamplus Academy
Blockchain Field
Korea Information Security Industry Association (KISIA)
Fusion Security Personnel Training
Information Security
Academic Credit Bank System
Bachelor of Information Security
Digital Forensic Track
Korea Information Technology Research Institute (KITRI)
BoB (Best of the Best) - Next Generation Security Leader
Forensic Information Security
Jeonju Kijeon College
Associate Degree of Science
Certifications & Awards
Certifications
NAVER Cloud Platform Certified Associate (NCA)
2021
Industrial Engineer Information Security
2020
AccessData Certification Examiner (ACE)
2016
Linux Master Level 2
2015
Awards
Forensic Information Security Academic Excellence Award
2020
Special Prize for Hacking Defence at the Korea Air Force Information and Communications Competition
2017