Koen van Gilst

Passionate & entrepreneurial JavaScript developer based in Utrecht. M.A. in Philosophy (cum laude) and a minor in Computational Science. Specializes in modern frontend (React) and backend (Node). Interested in working with inspiring companies that create innovative web apps that users love.

You can find me on Github, LinkedIn and Twitter or send me an email.

Koen van Gilst

Notable Client Project

  • For Stichting Dedicon I created a player for their audio books collections, it's designed specifically for users with visual impairments. The player also has a karaoke function that highlights the text currently being read, which helps children with dyslexia. Demo page (in Dutch)
  • For Tommy Hilfiger I worked as a fullstack JavaScript developer on their loyality app MyTommy. The app itself was build in React Native for both iPhone and Android, with a restful Node/Express API on the backend. Demo page
  • The Dutch Chambre of Commerce (KVK) has a high traffic website (about 1.5 million visitors per month) with applications that help companies do business in The Netherlands. As a frontend engineer I'm part of the team building and deploying the new Online Registration web app, which makes it easier for Dutch entrepreneurs to register their business online.


  • Platforms: Web, Node.js, Mobile (iOS)
  • Languages: JavaScript, TypeScript, HTML5, CSS3
  • Frameworks: React, React Native, Redux, Express, Next.js, Svelte, Sapper, jQuery
  • Tooling & Testing: react-testing-library, Webpack, Lerna, Babel, Jest, Nock, Detox, Cypress, Git, Unix
  • Knowledgeable: CI/CD, Testing, Monorepos, Single Page Apps, Accessibility, Server Side Rendering, Progressive Web Apps, Internationalization
  • Services: Docker, Gitlab CI, MongoDB, Postgresql, BuddyBuild, Mixpanel, Google Tag Manager, Heroku, AWS, Google Cloud, Jira, Sentry, Bugsnag


  • M.A. in Philosophy, Utrecht University (cum laude).
  • Minor in Computational Science, Utrecht University.
  • Erasmus Student Exchange, Universit├Ąt Regensburg (Germany).


References, code samples and a copy of my resume upon request.