He was the Chief of CSIRO's Astronomy and Space Sciences Division from 1 June 2010 and in October 2012 he left CSIRO to become the Director General of the Square Kilometre Array (SKA) Organisation.
He held a key position as the head of CSIRO's Astronomy and Space Sciences Division from June 1, 2010, before moving on in October 2012 to lead the Square Kilometre Array (SKA) Organisation as its director general.