Things I've built

A showcase of the projects I keep pinned on my GitHub profile. Every description here is written where the code lives, in the README of each repository.

Urho Matti 4.0

DigitKoodit/UrhoMatti

Digital version of Urho Matti 4.0 songbook. Urho Matti 4.0 is the newest songbook for Finnish engineering student organizations in Turku. The physical book was published in the end of 2024, and the digital version in 2025.

A PWA App developed with React. The application is also available on Google Play The song and category data is fetched from a json file and no backend functionality is needed. The datamodel for the json file can be found below.

JavaScript
Source Live site

5

Screenshot of Domain Map

Domain Map

Check one brand against every country's ccTLD, on a globe.

You own google.fi. Where else in the world is google still yours to take? Type the domains you already own, and the map colours all ~250 countries by whether the matching domain is yours, taken, free, or free-but-restricted.

TypeScript
Screenshot of Literally everything you need to do as a startup CTO

Literally everything you need to do as a startup CTO

Part engineer, part IT admin, part security officer, part recruiter, part firefighter. We’ll break down what the position actually includes and how to handle the chaos without (mostly) losing focus

This repository was created for a talk at Aurajoki Overflow, a finnish tech meetup. The talk was held on 22.4.2026.

Screenshot of Euribor Rates

Euribor Rates

Live Euribor rate tracker and mortgage tenor comparison tool. Data is fetched daily from the Bank of Finland.

Rates page (/) — current 3m, 6m, and 12m Euribor rates with month-over-month change, and a historical chart with 1M–5Y period selection.

Astro with SSR via @astrojs/nodeReact for interactive componentsTailwind CSS v4, shadcn/uiRecharts for chartsVitest for unit testsBiome for linting and formatting
Screenshot of Lanttusanomat 🥔

Lanttusanomat 🥔

Lanttusanomat is a Finnish satire news site — think The Onion with the clean usability of a modern Finnish news outlet. Every article is fiction, and the site says so loudly: satire badges, AI badges and per-article disclaimers are core product features, not fine print.

The platform is a fully static, offline-capable PWA built with Next.js, with content managed as Markdown in this repository and an automated AI pipeline that writes two new satire articles per day.

TypeScript
Screenshot of Hilja App

Hilja App

hilja-org/hilja

This repository hosts ✨Hilja App✨ built for Junction 2023 Hackathon, for the challenge related to chronic pain and treatments related to it.

From idea to prototype on Figma

TypeScript