CONTACT

📍Remote - EMEA | Paris, France

📩 [email protected]

🌐 https://yjkellyjoo.dev

LANGUAGES

natural

🇰🇷 Korean: native

🇫🇷 French: conversational

🇺🇸 English: professional

programming

• Python
• Kotlin
• Java

SKILLS

• Web3
• Spring Framework
• FastAPI
• MySQL
• MongoDB

SOCIALS

<aside> <img src="https://github.githubassets.com/assets/GitHub-Mark-ea2971cee799.png" alt="https://github.githubassets.com/assets/GitHub-Mark-ea2971cee799.png" width="40px" /> yjkellyjoo

</aside>

<aside> <img src="https://prod-files-secure.s3.us-west-2.amazonaws.com/51c18662-2954-4095-a045-dc981bb87e97/4d4aea2f-45ef-4b7a-981b-d08715d492b4/In-Blue-1282x.png" alt="https://prod-files-secure.s3.us-west-2.amazonaws.com/51c18662-2954-4095-a045-dc981bb87e97/4d4aea2f-45ef-4b7a-981b-d08715d492b4/In-Blue-1282x.png" width="40px" /> yejinkellyjoo

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STATS

$$ \Huge \textbf {Yejin Kelly Joo} \\ \small Web3\ Engineer $$

Trilingual (Korean/English/French) Web3 professional with 4+ years of experience blockchain engineering and hands-on DevRel experience. Skilled in designing robust API services, automating blockchain asset management, and leading technical teams in fast-paced environments. Also proven ability to translate complex protocol-level technology into accessible documentation, live demos, and hackathon programs that drive real builder adoption. Adept in Python, Kotlin, Java, TypScript and cloud-native architectures (AWS, GCP), with hands-on expertise in blockchain protocols and decentralized application development + DevRel instincts to ensure advanced tech ships with tutorials, code samples, and tangible use cases—not just whitepapers.

PROFESSIONAL EXPERIENCE

2025.08 - 2026.04

9m.

Developer Relations & Community Manager Korea | IFT, Status Network

Korea-first DevRel for Status Network: a natively gasless Ethereum L2 built on the Linea zkEVM stack, featuring soulbound reputation (Karma) and ZK-based spam prevention (RLN).

• Led Korea-first builder engagement strategy for Status L2, combining documentation, tooling, event execution, and hands-on technical support to improve developer adoption.
• Owned the end-to-end hackathon support pipeline, from bounty design and rubric creation to submission review, technical validation, and post-event builder follow-up.
• Maintained and contributed to the official technical documentation, restructuring the overall page hierarchy for readability and authoring developer-facing guides on gasless transactions, Karma integration, and testnet onboarding across multiple frameworks.
• Maintained open-source developer tooling including the Scaffold-ETH 2 extension for gasless development, the Karma testnet faucet, oracle feed monitoring tool, and L2 RPC tooling.
• Maintained public-facing developer infrastructure and community channels such as the builder community on Telegram (t.me/statusl2) and the Korean holders community on KakaoTalk, helping turn one-off event participants into recurring builders and contributors.

Technical stacks: Solidity, Hardhat, Foundry, ethers.js, viem, Scaffold-ETH 2, TS, Git / GitHub

2022.04 - 2025.04

3y.

Blockchain Backend Engineer | PILAB Technology, Inc.

Backend engineer of the Bifrost Network - Layer 1 EVM blockchain providing Multichain swap functionalities and Bitcoin banking service.

• In charge of the development and maintenance of the *Bifrost Multichain Observer,* automated monitoring of smart contract events and Bitcoin UTXO transactions across 7+ chains; exposed collected data via developer-friendly APIs in Python with FastAPI.
• In charge of the creation and maintenance of the *Bifrost API Service,* a gateway service for external clients to access multiple internal micro-services within our company's ecosystem enabling seamless cross-chain swaps; authored and maintained technical documentation and user tutorials.
• In charge of the development of Multichain Airdrop, a multithreaded airdrop engine in Python for automated cross-chain token distribution to the new users of the Bifrost Bridge.

Technical stacks: Kotlin, Spring Cloud Gateway, Spring Security, Python3, FastAPI, uvicorn, flask-restx, MySQL, MongoDB, Web3

2018.09 - 2019.08

11m.

EDUCATION

• 👩🏻‍🔬 Research Participations

🎞 Portfolio

🛠 Project Details

^ click on the title for details about the project.