David J. Mullen is an Irish businessperson who has been the head of 6 different companies. Presently, Mr. Mullen is Chief Executive Officer & Director at Shelf Drilling Ltd. and Chief Executive Officer for Shelf Drilling International Holdings Ltd. and Chief Executive Officer for Shelf Drilling Holdings Ltd. (both are subsidiaries of Shelf Drilling Ltd.).
He is also on the board of Subsea 7 SA and MD & Director-Geco Prakla Personnel Unit at Schlumberger Nigeria Ltd.
In his past career Mr. Mullen held the position of Principal at Schlumberger NV and President-South & North America at Schlumberger Oilfield Services, Inc. (a subsidiary of Schlumberger NV), Chief Executive Officer of Wellstream Holdings Ltd., Chief Executive Officer of Ocean Rig ASA and Senior VP-Global Marketing & Business Development at Transocean, Inc.
Mr. Mullen received an undergraduate degree from Trinity College Dublin and a graduate degree from National University of Ireland.