Hi, I am

Jos Leijen

Software engineer from The Netherlands. I enjoy developing code that works well for both the developer, the end-user and everyone in between.

It is --:--:-- in Alkmaar.

I specialise in

Web Development

Fast, responsible interfaces built with frameworks.

Backend Development

Reliable APIs, data and infrastructure.

Education

Hogeschool van Amsterdam

BSc Software Engineering

ROC Kop van Noord-Holland

MBO Niveau 4 Applicatie en media ontwikkeling

Projects

Social Media Clone

10-2025

An unfinished weekend-project front-end app built in Nuxt, inspired by Twitter / Bluesky.

Portfolio website

07-2026

The website you are visiting right now. Experimenting with Astro for the first time.

Nameless weather app

01-2024

A simple weather app built with Jetpack Compose that shows temperature and wind direction based on location. School project.

TravelBuddy

2022

A fully functional travel matchmaking website made in plain HTML, CSS and Javascript. Part of a school project.

Website Volant90

02-2024

A refreshed website built in SpringMVC for a badminton club. Part of a school project.

Pick-up games

05-2024

Weekend-project web app with Discord login to host organised "pick-up games".

Skills & Tools

Languages

Java

JavaScript

HTML / CSS

Python

PHP

Frameworks & Runtimes

Node.js

Vue / Nuxt

Spring

Gradle

Maven

Astro

Next.js

Tailwind CSS

Bootstrap

Flask

Hapi.dev

Jetpack Compose

WordPress

Joomla!

Paper / Spigot

Databases

MySQL

PostgreSQL

MongoDB

SQLite

Cloud Platforms

Google Cloud

Azure Cloud

Tools

Git

Github

Gitlab

Docker

Terraform

Postman

Insomnia

Photoshop

Figma