Hej, I'm Mathis, Software Engineer based in Hamburg.

Albedo - A satellite tracking app that shows upcoming passes of major satellites based on your location. Native interface following Apple's design standards, with complete astrodynamics implementation (SGP4, TLE, ECI/ECEF), real-time ground tracks, observation statistics powered by WeatherKit, and a custom SPM for orbital mechanics calculations (Earth shadow transitions, apparent magnitude, albedo).

BarTinder - An open-source cocktail discovery, creation, and management app. Originally designed as a learning resource for SwiftUI, it demonstrates core concepts: views, lists, refactoring, gesture animations (including Tinder-style swipe). BarTinder leverages Foundation Models (Apple Intelligence) to bring ideas to life, uses SwiftData for persistence, and is fully tested with Swift Testing through Xcode Cloud.

I also write articles to help the community. Here are some of them:

• Mastering Swift 6.2 Concurrency: A Complete Tutorial
• SwiftUI Redraw System In Depth: Attributes, Recomputation, Diffing (featured in Peter Friese's newsletter, Staff Developer Advocate, Google Firebase)
• The Art of SwiftData in 2025: From Scattered Pieces to a Masterpiece