Business Analyst The Business Analyst and or the Requirements Analyst might (not always the case) not have the mind set to be thinking about or know how to improve the end-user’s experience.

Graphic Designer When I say graphic design, I mean typography, making an interface readable, visual rhythm, branding and then making it look good and feel right.

Front-End Development The ability to create prototypes is important as an Ix Designer. The closer you can come to the real thing the better. Also, part of usability and accessibility is in the actual markup.

Depending on the organization you are in, some or all of these roles may be played by the Ix Designer.