Jungsu Han (Harvey)

On-chain Analytics & Ecosystem Support

About Me

Driving growth in Web3 through on-chain analytics, partnerships, and community engagement.
Passionate about connecting blockchain technology with real users and building sustainable communities.

  • B.S. & M.S. in Computer Science (POSTECH)
  • Experience in blockchain core engineering and developer relations
  • Focused on growth, partnerships, and marketing across Korea regions

Experience

Initia Labs

Core Engineer & DevRel

2023.01 - Current

https://initia.xyz/

Initia is a unified L1+L2 blockchain protocol that lets developers easily build custom rollups

  • Worked as DevRel & Ecosystem Growth
    • Led third-party onboarding, providing technical guidance and managing partnerships
    • Produced technical and community-facing content (research articles, talks) to educate and grow the ecosystem (Mammothon)
    • Organized community events, delivered presentations, and hosted developer sessions (ETHCC 2024)
    • Authored comprehensive documentation and tutorials to accelerate developer adoption and user growth
  • Worked as Core Engineer
    • Contributed to the core development of the Initia blockchain protocol: Initia MoveVM, Initia Client
    • Designed and implemented the VIP contract and supporting indexer, APIs, and bots
    • Implemented the first version of OPinit bots for the Initia Optimistic bridging stack
    • Built developer tools for seamless integration with Initia chains, including initia.js and initia-registry

Terra

Core Engineering

2022.04 - 2023.01

https://www.terra.money/

Terra is a blockchain protocol and payment platform used for algorithmic stablecoins.

  • Proficient in Cosmos SDK architecture, with hands-on experience in modules like staking, bank, and auth
  • Developed and deployed smart contracts using CosmWasm
  • Proposed and prototyped a novel storage fee mechanism
  • Maintained and optimized ETL SDKs (Python and JavaScript) for Terra Mainnet analytics
  • Participated in the migration process from Terra Classic to Terra 2.0

CryptoQuant

Backend Developer

2019.07 - 2020.01 (7 month)

https://cryptoquant.com/overview/btc-exchange-flows

Quant service startup for Blockchain investing.
Actionable on-chain data, charts, alerts for investors in $BTC, $ETH, $Stablecoins.

  • Engineered backend systems for large-scale analysis of Ethereum and ERC-20 stablecoin on-chain data (> 4TB)
  • Led migration of backend infrastructure from Elasticsearch to a relational database system
  • Developed robust API services powering real-time quant tools and data visualization dashboards
  • Acquired broad technical and market knowledge of the blockchain and crypto analytics industry

Projects

CURG (Crypto Users Research Group)

2024.03 ~

  • CURG is Korea-based developer community of blockchain engineers and builders
  • Contributed to the ecosystem through open-source projects, research, and collaborative building
  • Organized seminars, meetups, and guest speaker sessions to promote blockchain adoption
  • Hosted academic–industry networking events, engaging students, developers, and startup founders
  • Served as a core organizer, managing community operations and coordinating initiatives

FastCampus Blockchain Lecture

2022.08 ~ 2022.11

  • FastCampus is the most popular online education platform for adults in korea
  • Lecture topic - Wallet, Bridge, Block Explorer etc.
  • About 40 classes for 13 hours
  • Class Link

Blockchain-based CBDC

2021.1 ~ 2021.11

Education

POSTECH

MS Computer Science Engineering

2020.3 - 2022.2

Studied the latest blockchain industry and technical background. Interested in Defi and Cryptocurrencies.

POSTECH

BS Computer Science Engineering

2013.3 - 2019.8

Skills

Languages

  • Korean: Native
  • English: Business proficiency
  • Japanese: Business proficiency