WAHSUNRésumé

Product engineer · Taipei

WAHSUN

I build small, sharp tools — one feature finished instead of ten half-built ones.

scroll/work · projects · stack
01

Experience

4 roles
Northlight Studio
2023 — Present

Senior product engineer

Design systems and the rendering layer behind them.

  • Rebuilt the component pipeline so a design change ships in a day, not a sprint.
  • Cut first paint on the marketing site from 2.4s to 0.9s by removing 380kB of unused JS.
TypeScriptWebGLDesign systems
Field Notes
2021 — 2023

Product engineer

A note-taking app for people who take too many notes.

  • Shipped offline sync with a conflict model users could actually understand.
  • Owned the editor: 60fps typing on a five-year-old phone.
SwiftSQLiteSync

Education

National Taiwan University of Science and Technology2012 — 2016B.Arch, Architecture
Independent study2016 — nowGraphics programming, compilers, typography
02

Projects

selected
NINE9 film looks · 60fps

A camera that renders colour at capture, so the shutter only writes.

SwiftMetalGLSL
SCREEN12k memories indexed

On-device visual memory: screenshots parsed into structured, searchable data.

SwiftVisionSQLite
CADViewer1.2M triangles

STEP, IGES and STL on iPhone, iPad and Mac with assembly trees and measurement.

SwiftMetalCAD
TokenVault0 servers

A local-first key vault that syncs through iCloud and never sees a backend.

SwiftCryptoKitiCloud
03

Stack

daily use
languagesTypeScriptSwiftRustPythonGoBashSQLGLSL
interfaceAstroReactSvelte原生 CSSCanvas 2D
graphicsWebGLthree.jsMetalWebGPU
systemsLinuxCloudflare WorkersSQLitePostgres
toolsNeovimGitFigmaffmpeg

say hello

GitHubXWriting

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