Projects

2/2025 - 7/2025
The Bayerisches Landeskriminalamt operates its own IT department for developing specialized applications for the Bavarian police in a highly sensitive environment (managing approximately 35,000 iPhones). Beyond apps that digitally support processes, the scope also covers fields such as digital photography and media forensics (“Medientechnische Forensik”).

Scope of work

  • Software development for the Bavarian Police
  • Developed prototype of 3D scanner app using AR and RealityKit for the forensics department
  • Discussed and implemented reference app architecture and libraries for all apps using Swift Package Manager (SPM), dependency injection (DI), Swift Testing, Gitlab and MDM/EMM systems
  • Refactored and optimized internal frameworks for authentication, MDM/EMM-Integration, UI components etc.
  • CI/CD pipeline development and maintenance (Gitlab/Docker)
  • Technologies: Swift, SwiftUI, ealityKit, Point-Free frameworks (Dependencies, Sharing), CI (Gitlab/Docker)

2017 - 2023
waipu.tv is an IPTV live streaming app, available on a variety of systems, including iOS, iPadOS and tvOS. Features include Free-TV, Pay-TV, Video-on-Demand, online video recording, timeshift and more. Exaring, the company behind the product, operates and develops the entire platform, from de-/encoding of the original satelite signal to stream delivery to more than 2 million customers in Germany.

Scope of work

  • Developed iPhone, iPad and tvOS apps for Live-TV and VoD streaming platform with ~2 million active users
  • Planned, implemented and shaped technology roadmap and codebase for all apps (~150k LoC)
  • Cross-functional software engineering with backend, Android and design teams, including feature and API design, data migration and display of large datasets with complex UI
  • Worked on challenging tasks including data migration, load balancing and performance tuning of the EPG (electronic programming guide): complex data structure, retrieval (caching) and UI display
  • Technologies: Swift, SwiftUI, UIKit, Widgets, AVPlayer, RESTful APIs, CI (Fastlane, Gitlab)

2012 - 2017
During my freelance work in Berlin, I contributed to the development, enhancement, and maintenance of several newspaper apps, all using HTML for layout and display for cross-platform delivery. Native extensions like offline-download, navigation and subscription management were part of the custom NewsFramework. In 2014, Handelsblatt was awarded by Apple as "App Store App of the year (category newspaper)", while the Rheinische Post reached over 30.000 users every day.

Scope of work

  • Developed iPad app for one of the biggest newspapers in the Ruhrgebiet
  • Handelsblatt iPhone was "App Store App of the Year 2014" in the category Newspapers
  • Development of NewsFramework for common epaper requirements like incremental content updates, offline downloads and resource management
  • Integration of NewsFramework into multiple iOS newspaper apps, including Handelsblatt, Rheinische Post, Frankfurter Rundschau and others
  • Worked on app architecture, modularization, feature development (e.g. SSO or payment), debugging and performance optimization
  • Technologies: Objective-C, Swift, HTML/JavaScript, URL Loading System (iOS), (Offline-)Caching, WatchKit, Ad-Integration, Newsstand (iOS), Analytics

2010 - 2017
My career as a freelancer started with two years working on the eBook-App "textunes" (now Thalia) and creating interactive children's books, which included developing a converter to transform Flash animations to HTML and CSS.
In 2016, I worked for the United Nations World Food Programme (WFP) and the "ShareTheMeal" app, which allows users to donate 50 Cents, an equivalent of the cost one meal.
I also workd on "Viola", the prototype of a biographical photo app for the relatives of people with dementia, together as a team of three creatives during a residence at the Social Impact Lab Berlin.
In 2017, I participated in several projects for OTTO in Hamburg (mostly shopping apps).

Scope of work

  • ShareTheMeal by the United Nations World Food Program was awarded multiple times by Apple; there was also ad ad feature at the Times Square in New York City; Localization in nine languages (incl. Right-to-left like Arabic); Big 3.0 release for World Food Day (Achievements, Challenges, Teams)
  • Viola did win the audience award of the "Paritätischer Wohlfahrtsverband" in 2016
  • Freetime project "Green Tap"/"Green Touch" as playground to test new technolgies (unfinished)

ongoing
Besides my degree as software engineer I am also a professional designer (Dipl. Designer (FH) Multimedia) and often enjoy crafting a logo, layout a flyer or build a homepage, and in the past also my own app ideas. In a digital world it is very rewarding to hold one of your pieces of work in your own hands.