Hi! I am
William KOÏ.

Front-End Developer Senior with over 10 years of experience, I help brands and teams turn ideas into high-performing, accessible, and elegant web products. Specialized in JavaScript, Vue.js, and React, I combine technical excellence with a strong design sensibility to craft high-value, tailor-made digital experiences.

  • Nuxt.js / Next.js
  • UI Frameworks (Vuetify, Tailwind CSS, etc.)
  • D3.js
  • Webflow
  • Wordpress
  • Vue.js
  • Angular
  • React
  • Git Versioning
  • Javascript
  • Node.js
  • HTML5 / SCSS
  • Typescript
  • Postman
  • Express.js / Nest.js
  • PostgreSQL
  • Prisma
  • Redis
  • Notion
  • Figma
  • Adobe Suite / Affinity Suite
  • Webdesign
  • Design UX / UI
  • AI Tools (Claude, Gemini, ChatGPT, etc.)

Let's transform your vision
into a unique web experience !

Don't hesitate to explore :

or

You can also follow my work here :

MaltUpwork

Hi! I am
William KOÏ.

William Koï Avatar