I’m Sven-Bjarne Seiffert. I develop in the Cocoa world, mostly iOS. Take a look at what I’ve been into lately:

WaldSkulpturenWeg

is an iOS Application for the famous
Waldskulpturenweg hiking trail in the Rothaargebirge,
Germany.
Beautiful UI made with UIKit, CoreGraphics and Adobe Illustrator,
location based gamification with CoreLocation, backed
by CoreData and all wrapped up in smart UIKit components.

Stundenblume

is a way of keeping your excitement for
future events at a top level. Custom control mechanisms
were developed to achieve a user friendly, but still
beautiful UI.
Developed with a combination of UIKit and SpriteKit.

Vier

is a simple, but challenging game.
This will most likely tangle up your cognitive skills.
Build with SpriteKit.

Medis Lübeck

Every summer all medical students of Germany unite to participate in a event called the Medimeisterschaften - a festival of soccer, music and party. Every university nominates a soccer team to represent their institution. This is the Lübeck's team webpage. Includes custom front-end design as well as some back-end PHP for ticket-sales.