Dahye Ko

Web Frontend Engineer

A web frontend engineer with experience building products 0→1 at early-stage startups. Services I have built include an AI-powered video generation and editing tool, and an AI model viewer and editor.

Cutib

Aug 2025 – PresentCPO / Web Frontend EngineerOct 2024 – Jun 2025Web Frontend Engineer

Built the frontend 0→1 for a web video editor that generates scenarios and assets with AI, enabling cut-level editing.

  • Resolved low frame seeking precision of the native browser video player by designing a WebCodecs API-based frame decoding pipeline, stabilizing frame seek speed from 2,781ms to 1,003ms
  • Eliminated playback delay when transitioning between separate video sources per cut by introducing 3-slot video pooling, reducing cut transition delay from 2,780ms to 1,329ms
  • Resolved playback stutter caused by growing images and audio on the timeline by introducing viewport-based virtualization
  • Abstracted all editing actions into typed command objects — extensible architecture ready for AI agent editing
ReactNext.jsTypeScriptZustandTanStack QueryWeb Audio APIWebCodecsCanvas APIWebSocket

Clika

Aug 2023 – Sep 2024Web Frontend EngineerOct 2022 – Jun 2023Web Frontend Engineer

Built the frontend for an AI model viewer and editor for ML engineers.

  • Resolved main thread blocking caused by large-scale graph layout computation by offloading to a Web Worker
ReactNext.jsTypeScriptZustandSWRMUIreactflow

Angelswing

Aug 2021 – Jun 2022Web Frontend Engineer

Frontend development for a construction site management service that visualizes drone footage as 2D/3D maps.

ReactTypeScriptRedux Toolkitstyled-componentsOpenLayersCesium

4th Korea Data Journalism Award

2021.10 | Visualization of the Year — 소멸의 땅, 지방은 어떻게 사라지나

KAIST

2017 – 2019 | M.S. in Culture Technology

Korea University

2011 – 2017 | B.S. in Environmental Science and Ecological Engineering