Roger Robinson steps down from his role as head of Laing O'Rourke's European business.
Anna Stewart will combine her position as group chief executive with managing director of the Europe Hub.
A Laing O'Rourke spokesman said:
"Roger Robinson will step down from his role as lead of Laing O'Rourke's Europe Hub at the end of this month. He will remain, however, in the company as a senior executive with responsibility for a wide range of important relationships and aspects of the business including Laing O'Rourke's joint venture with Bouygues at Hinkley Point C.
Roger Robinson joined the group in 2009 after ten years at Carillion. He became CEO of the Europe Hub in 2010 and is a member of the group executive committee. He is a fellow of the Institution of Civil Engineers, and has worked for major contractors his entire career.