YongJun Lee

이용준

stareta1202@gmail.com

On-Device Machine Learning Engineer || Swift Developer

Education

  • Mechanical Engineering, Korea University (2016.03 - 2021.03)

  • 고려대학교 기계공학과

    • Work Experience

    KakaoHealthcare

    2023.10 - continue

    Software Engineer

    Developed and maintained iOS applications for mental healthcare services

  • Implemented a CI/CD pipeline with GitHub/GitLab Actions, Docker and Swift, reducing deployment time by 50% and ensuring automated testing reliability.
  • Led project coordination as Technical Project Manager, ensuring seamless communication with designers, PMs, and partners, resulting in a 20% increase in delivery efficiency based on tickets.
  • Consolidated 90+ hospital-specific repositories into a single Tuist-based project with approximately 100 targets, enhancing Git management and efficiency.

    • kilo

    2019.09 - 2023.07

    Founding Software Engineer

    Developed Mealligram Mobile application (2+Milion users)

  • Built a healthcare application from the ground up, growing it to over 2 million users, demonstrating a strong entrepreneurial mindset and willingness to tackle ambitious challenges
  • Spearheaded technical development across iOS, Android, and machine learning, embracing new technologies and implementing a unidirectional data flow architecture for cross-platform consistency
  • Designed a scalable and testable app architecture by modularizing components, implementing a CI/CD process to enhance team efficiency and productivity. Reduced test, deployment, and build times, significantly boosting development speed and streamlining workflows for colleagues.

    • JeongYookGak

    2021.02 - 2022.04

    Software Engineer - iOS & Backend

    Developed a commerce and a delivery iOS application

  • Improved code readability and reduced redundancy by 18% by developing a declarative UI framework using UIKit
  • Established a unified contribution and review framework for the iOS team, improving workflow efficiency and minimizing resource conflicts under a unidirectional architecture

    • Invented back-office platforms and an IoT electric scale

  • Patented an IoT electric scale by designing custom hardware and software for a digitalized manufacturing system, enhancing operational efficiency
  • Reduced facility expenses by 24% by decreasing reliance on third-party systems, leveraging a Swift server platform and NestJS to build robust in-house solutions

    • MakerSpace at Korea University

    2018.08 - 2020.05

    Founding Lead Engineer

    Organized and supervised facility and trained managers

  • Coached 30+ managers to utilize machines and operated the organization and mentored 100+ students on 3D printing and laser cutting craftsmanship
  • Researched on control technology system and developed prototype models, published 3 patents on wearable and controlling devices