jaylee

Blockchain Developer

Blockchain developer with 6 years in open-source mainnet and DApp development. I've led projects like a Governance DAO and an NFT marketplace on an EVM-based mainnet. Experienced with L2s (Optimism, zkSync), hands-on source-level analysis of lending protocols and account abstraction, and secure smart contract design.

Hands-on with low-level Solidity and EVM assembly, gas optimization, and clean architecture. Also familiar with backend systems and subgraph integrations. I use ChatGPT daily to generate test code, validate logic, and speed up development cycles.

Looking to join a team building real, production-grade Web3 apps.

Experience: 6 years

Yearly salary: $100,000

Hourly rate: $50

Nationality: 🇰🇷 South Korea

Residency: 🇰🇷 South Korea

Experience

Blockchain Developer

ZeroOne

2021 - 2023

Led development of BoaSpace, an NFT marketplace based on OpenSea logic, deployed on the BOSagora mainnet. Built Votera, a DAO governance and funding platform. Maintained and contributed to BOSagora's EVM-compatible mainnet.

Blockchain Developer

BPF Korea

2019 - 2021

Contributed to the development of the BOSagora mainnet, implementing core logic including block generation and proposer selection using a Federated Byzantine Agreement (FBA) consensus.

Blockchain & Mobile App Developer

People & Technology

2013 - 2019

Developed smart contracts for BC Card’s coupon registration and settlement system on Hyperledger. Built Android/iOS apps for indoor mapping and navigation using BLE beacons.

Skills

ethereum

hardhat

node

typescript

solidity

english

korean

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