Yejin Kelly Joo CV

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

📞 +33) 06 64 46 90 72

📍Remote - EMEA | Paris, France

3rd-year Backend Engineer specializing in blockchain platforms. Passionate about clean, secure code and delivering robust backend solutions. Work authorization in France from June 2025 - no visa sponsorship needed.

PROFESSIONAL EXPERIENCE

Blockchain Backend Developer | PILAB Technology, Inc.

2022.04 – 2025.04 (3y)

Backend engineer of the **Bifrost Network** (Layer 1 EVM Blockchain)
Built and maintained the Bifrost API Service, a gateway API server to connect external clients and internal microservices.
Developed Bifrost Multichain Observer, automated monitoring and API provider for asset bridges, improving incident detection and data transparency.
Engineered Multichain Airdrop, automating coin distribution to new users.
Tech Stack: Kotlin, Spring, Python, FastAPI, MySQL, Web3

Engineering Intern | IOTCUBE Inc.

2018.09 – 2019.08 (11m)

Automated **NVD data crawling** and database updates.
Built a **CVE search solution** using Named Entity Recognition model, enhancing vulnerability tagging accuracy.
Tech Stack: Java, Spring, MyBatis, MySQL, NLP, NER, CVE

PROJECTS & AWARDS

<Pet ID: Blockchain-based pet identity provider> ETHGlobal Brussels 2024, Best Use of Fhenix Stack – 1st Place

Orchestrated the team spirit and designed the overall blockchain-based identity system for pets enabling secure registration, which attracted Fhenix’s interest for potential grant funding.