Jeroen Wellner

About

Hi, I'm Jeroen. I'm a freelance software/devops engineer (Wellner IT Consultancy), building things for the internet since 1996.

Stack

Currently working with (updated October 2026):

build

TypeScript · Node.js · Fastify · Vite · PostgreSQL · S3 storage

ship

Docker · GitHub Actions · Flux GitOps · SOPS

run

Kubernetes (k3s, DOKS) · Traefik · cert-manager · Tailscale

observe

Prometheus · Loki · Alloy · Grafana

with

Claude Code · Cursor · bb

This site ships the same way: tag, GitHub Actions builds the image, Flux rolls it out.

Contact

Mail me at jeroen@wllnr.nl.

This site

Built with Eleventy, Sass and a small hand-written shell in vanilla JavaScript.

Source: github.com/jwellner/website