Junsik Shim

Senior Frontend Engineer

South Korea

About

Frontend engineer with 15+ years of experience interested in providing interactive data visualization and fluent user experiences. Highly experienced in developing high-performance cross-browser JavaScript applications in both mobile/desktop environments. Enthusiastic about extracting the core requirements from users' voices and implementing intuitive ways to solve them. Love to work with passionate people with new ideas, better skills, and great manners.

Experience

  • Senior Frontend Engineer at Twelve Labs
    Sep 2024 - Present · 1 yr 11 mos

  • Frontend Team Lead at Supertone
    May 2022 - Jun 2024 · 2 yrs 2 mos

    - Constructed a customized node-graph UI using SVG and Canvas from scratch. This significantly improved the workflow of ML engineers by liberating them from manually editing configuration files. - Implemented a visualization of voice and note data using D3.js, akin to DAWs. This enabled users create AI-enhanced music with greater efficiency. - Proposed diverse ideas for the incorporation of voice AI technology into the final product by quickly implementing numerous prototypes. Some of these evolved into key features while the others served as a foundation for more productive discussions.

  • Senior Frontend Web Developer / Cell Lead at Kakao Corp
    Jul 2019 - Apr 2022 · 2 yrs 10 mos

    - Engineered a vaccine leftover reservation system and QR check-in service in response to COVID-19. The QR-based system witnessed staggering usage with 10M DAUs, and the key to this success was to maintain universal device compatibility and accessibility. - Created and led a group that focused on mentoring junior frontend developers to grow.

  • Senior Software Engineer at NHN
    Jan 2016 - Jun 2019 · 3 yrs 6 mos

    Developed a job scheduler with customized mxgraph(node-graph UI library) and D3.js. Leveraged DAG to depict dependencies efficiently while incorporating cycle detection algorithm to prevent user errors. Further, cron schedules were visualized in a calendar-style layout to ensure scheduling accuracy.

  • Software Engineer / Co-founder at Letsee, Inc.
    Jul 2014 - Dec 2015 · 1 yr 6 mos

    Developed AR based LetseeBEER