Ruth Almgill joins from the BBC World Service where she was a studio manager, engineering programmes from complex features to live outside broadcasts.
At Sonnox she will help to look after the company’s expanding customer base.
Managing director Rod Densham said: “Our constantly growing user base has brought us to a position where, if we want t keep up the excellent level of support our customers expect, we needed to grow out support team accordingly. We’re delighted to have Ruth on board.