FULL-STACK DEVELOPER

JON KULLBERG

I design and build complete web products → from the database schema to the last pixel of motion.

Selected work,
built end to end.

  1. Scandinavian History Tours

    Marketing & booking platform for a walking-tour company in Stockholm's Old Town. Four languages, multi-codec hero video, Schema.org everywhere.

    SVELTEKIT · POSTGRES · VERCEL

  2. Ekvalls Fastigheter

    Site for a second-generation family property company in Kristianstad. Parallax sunrise hero, a live property map, and interest applications handled properly.

    SVELTEKIT · GSAP · MAPBOX

  3. Co-ster

    Roadster tours of the Stockholm countryside — one passenger, one MX-5, and a driver who knows the back roads. Routes, itineraries, booking.

    SVELTEKIT · TYPESCRIPT · VERCEL

  4. Banker's Clock

    When the world's exchanges are open, in your time not theirs. One session engine drawn three ways: a live poster, a 24-hour dial, and a dimensioned sheet, each a Bauhaus study in type, grid and colour.

    BAUHAUS · DATA VIZ · VERCEL

ABOUT

I'm Jon, a full-stack developer who ships complete products: design systems, APIs, databases, pipelines, deploys.

One person → the whole stack.

Front of house

  • Interfaces & design systems
  • Motion, WebGL & interaction
  • Accessibility & Core Web Vitals

Back of house

  • APIs, auth & integrations
  • Postgres, caching & queues
  • Payments, i18n & search

Operations

  • CI/CD, testing & previews
  • Observability & load testing
  • Edge, serverless & DNS-to-deploy

Signage

  • Schema.org & structured data
  • Social cards & open graph
  • Analytics & search visibility