Projects

Below you will find some projects that I worked on in my career or during my free time. Apart from the technology involved and what these projects were about, I also tried to include some of the things I learned in the process.

Please note that I am no longer associated with any of the mentioned companies.

Chrono24 Android App

When? February 2023 - January 2025

Technology and tools: Kotlin, AndroidX, Jetpack Compose, Gradle, fastlane, Android Studio, GitLab

Collaborating with product owners and being deeply involved in several high-impact projects of a global marketplace with 9 million monthly users

Migrating a large legacy app to a new structure that follows modern Android development best practices while migrating its complex user interfaces to Jetpack Compose, focusing on maintaining great performance

Working closely together with iOS and web engineers to guarantee a consistent user experience across multiple platforms

Main learnings:

Working in cross-functional teams, discovery of product ideas, validation through A/B testing and other testing strategies, user interviews, continuous delivery

Take a Look at the App

Dental technology for Dentsply Sirona

When? November 2020 - January 2023

Technology and tools: C++, C#, .NET, Windows API, WPF, Plastic SCM, Visual Studio, inVision

Expanding a Windows desktop application for controlling and optimizing the user's machine and connected hardware

Migration of existing on-premises software to a cloud-based solution

Creation and maintenance of performant user interfaces for 3D CAD software

Main learnings:

Navigating very large legacy projects, working according to SCRUM, dealing with special requirements of software development for medical products, development according to the software release life cycle

Find Out More

Matane

Open Source

When? August 2024 - December 2024, on hold

Technology and tools: Kotlin, AndroidX, Jetpack Compose, Hilt, Gradle, Firestore, Crashlytics, Go, Google Cloud Run functions, GitLab CI/CD, fastlane, Material 3

Building a native Android app for learning Japanese, using Firebase for its backend

Supporting tablets and foldables as first-class citizens by designing adaptive layouts for every form factor

Currently on hold in favor of other projects

Main learnings:

Building a serverless backend, implementing canonical layouts and adaptive navigation, establishing CI/CD from scratch

Take a Look at the Code

This website

Code available on request

When? September 2024 - October 2024, February - March 2025

Technology and tools: HTML, CSS, JS, Web Components, Mustache Templates, GitLab CI/CD, GitLab Pages

Original setup using a simple Go backend, HTML templates and plain CSS, deployed using GCP and Docker

Refactored to a static website, built with Mustache templates and web components, deployed using GitLab Pages and Cloudflare CDN

Development of a simple static site generator, including a localization system, inspired by Android's string resource system

Main learnings:

Building static sites with HTML and CSS, creating framework-independent reusable web components, using and parsing Mustache templates, continuous deployment using GitLab Pages and Cloudflare

Request Access to Code

But wait, there's more

Apart from the projects listed above and other smaller projects I worked on in my professional career, I also worked on some other personal projects that I tinkered with for a while but ultimately did not finish.

However, these may still be interesting as they are written in languages I do not have any other samples of. Therefore, they are listed up below. In case you want to get access to the code of one of these projects, feel free to reach out to me. And in case you want to know why I abandoned them, I would also love to talk about it!

Online Japanese dictionary

Code available on request

When? February 2024 - April 2024

Technology and tools: Rust, Rocket Web-Framework, Handlebars, Bootstrap, Go, Docker, Google Cloud Run, Google Cloud Artifact Registry

Built a simple web server in Rust using the Rocket web framework serving HTML and offering a REST API for mobile clients

Wrote some of the Go code for parsing Japanese dictionary data also used in the Cloud Run functions currently in use for Matane

Main learnings:

Basics of Rust, designing REST APIs, HTML templating, basic understanding of Bootstrap, basics of Docker and Docker Compose, deployment of containerized applications using GCP and Cloudflare

Request Access to Code

C++ Vulkan renderer

Code available on request

When? March 2023 - May 2023

Technology and tools: C++, Vulkan SDK, CMake, GLSL, glTF, GLFW

Built a simple renderer in C++ making use of the Vulkan SDK

Created an importer to load and navigate through textured 3D scenes in glTF format

Gewonnene Erfahrung:

Modular project structure using CMake, basics of the Vulkan SDK, double buffering, glTF file specification

Request Access to Code