Full-stack software engineer and architect. Various jobs, various platforms, multiple teams, worldwide. Attended multiple conferences in the USA, 4 times WWDC, C++ Seminars. Experience shows just some selected jobs.

Development of a Linux (buildroot) based TouchOS with custom UI framework. Integration into Apple MFI, Apple protocol implementation, hardware accelerated video decoding, fast UI using OpenGL, Qt based application running on top of the custom UI framework.In later product versions indoory cacling bikes communicate to a server using ANT+ and an Android based tablet ro control the media server.Products: MyRide, MyRide+, Connect, Connect Kiosk, AWS based CDN, ANT+ data collector

Volume calculation and volume mesh generation, optimized high speed Delaunay triangulation of survey data and visualization,

Idea, creation and further development of the Cardreader App iOS). Development was done in cooperation with the x-root company with a deal to share cost and income.Teached myself iOS develpoment and started my first (and very successful) iOS application. The development continued for several years until the app wasn't profitable anymore.

Startup for mobile couponing in cooperation with the 'Wochenblatt Verlagsgruppe'.

Course about mobile software development

Same tasks like before, but switched to freelance employment.

Management of small teams. Main task was to develop the client (forklift) side of the warehouse tracking software (SLS) and 3D visualization of the warehouse, forklift routes and orders. Massive use of CG and graph theory, custom 3D software rendering engine, optimized routing and object recognition. Time critical solution of complex problems.

Involved in the transition to a modern Java based application. Development large software modules like a Drag&Drop Report Generator (idea - prototype - project management - implementation)