Software Engineer building platforms from idea to production.

The app for EarsOnly Protect (v2) earbuds, aimed at people working in industrial, construction, and other loud environments. It regulates sound exposure in real time and gives wearers controls to balance hearing protection against communication and music.

An Android toolkit app for managing Dopple's true-wireless wearables: OTA firmware updates, language packs, equalizer settings, and button configuration.

The consumer app for EarsOnly Protect earbuds. It lets people control their own hearing-protection settings, and lets companies restrict what their employees are allowed to change.

A B2B2C portal where Dopple's customers order products for their own end users and manage that relationship, including control over the white-label consumer app.

My graduation project. Five pieces working together: two mobile apps (iOS and Android), a web interface, a backend, and a database, giving runners feedback on their running form based on data recorded inside the Dopple earbuds.

A React front end with a Node.js back end for collecting and processing diagnostic data from wireless earbuds. I built it during an internship; it's still running today and pulls data from around 5,000 devices a week.

A production dashboard for a cast-iron factory that tracks the factory floor and shows workers optimized instructions in real time. My part was the database queries and the reports.

A portal for controlling WiFi access points per student room, deployed across two student flats in Groningen (about 60 rooms over 3 floors). The hard part was mapping rooms and assigning channels so neighbouring rooms didn't interfere with each other.

A system written in .NET/C# that lets internal projects which aren't really websites get proxied to the outside world behind a user-friendly presentation layer.

A clicker game built for two courses at once (Design Patterns and Threading in C#), using UWP with a backend server for 4-player multiplayer. Progress is stored in a remote database. Keeping everyone's session in sync was the hard part, and the fun part.

Inspired by Kahoot: a shared screen shows the game while everyone else uses their phone to take a turn, applied to a card game instead of a quiz. One of my few solo school projects, built during the pandemic.

A WPF desktop app for a C# course, built with a window shape that's anything but the usual rectangle. Short for Remote-Access-Trollkit, named after the hacking tool, minus the malicious part.

An Android app that records running metrics and raw accelerometer data from a single true-wireless earbud, along with GPS and heart-rate-band data. Sessions export to .csv or .tcx for other training apps.

A first-year concept for quickly sharing social media info with someone new: tap two NFC-equipped phones together to create a 'spark', with a QR-code fallback for phones without NFC.

Built for the Advanced Java minor at NHL Stenden. The brief was mostly about API design, but the project itself was a narrowcasting dashboard for digital announcement boards around the school, so it came with a full working frontend too. Originally called Vigmo, since renamed, still running.

A mixed digital and physical tour app for a church in Zweeloo, Drenthe. Visitors scan QR codes on items around the church to see more information, which stays saved in the app for 48 hours afterwards.