CONTACT

📞 +33) 06 64 46 90 72

📩 [email protected]

🌐 https://yjkellyjoo.site/

📍Remote - EMEA | Paris, France

LANGUAGES

natural

🇰🇷 Korean: native

🇫🇷 French: conversational

🇺🇸 English: professional

programming

• Python
• Kotlin
• Java

SKILLS

• Web3
• Spring Framework
• FastAPI
• MySQL
• MongoDB

SOCIALS

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STATS

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

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

2022.04 - 2025.04

3y.

Blockchain Backend Developer | PILAB Technology, Inc.

Backend engineer of the Bifrost Network (Layer 1 EVM-compatible Blockchain Network providing Multichain swap functionalities).

• 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.
• In charge of the development and maintenance of the *Bifrost Multichain Observer,* automated monitoring and API provider for asset bridges, improving incident detection and data transparency.
• In charge of the development of *BFC Airdrop,* a scheduled job script in Python intricately designed to identify and airdrop native coins to 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.

Engineering Intern | IOTCUBE Inc.

Intern in the dev. team of a start-up computer security company

• Built a ****NVD data crawling scheduler in Java with **Spring Boot and MyBatis which would run in the background on a linux server, periodically collect data from the NVD and update a local database designed on MySQL DBMS.
• Built CVE search solution using a Named Entity Recognition model, enhancing vulnerability tagging accuracy. The located product names are then used in SQL search queries to suggest which products from the DB may be related to this CVE.

Technical stacks: Java, Spring Boot, MyBatis, MySQL, NLP, NER, CVE

EDUCATION

• 👩🏻‍🔬 Research Participations

🎞 Portfolio

🛠 Project Details

^ click on the title for details about the project.