To work in an environment where everything is possible and continuously add the WOW effect to mobile user interfaces, place Yacir Persson-Chelbat in a rapid changing environment surrounded by the latest technology and creative problem solvers. Mr Persson-Chelbat is Head of the Project office at The Astonishing Tribe (TAT).

The User Interface (UI) plays a major roll in the phone industry where TAT strives to become a global leader in beautiful, usable, and high-performance user experiences on mobile devices. TAT is a Swedish software technology and design company offering products and services that differentiate and enhance the user experience of portable devices.