Morgan Sindall infrastructure chief Jag Paddam has left the business.
The chartered civil engineer, who has more than 30 years of management expertise in the sector, resigned as managing director infrastructure.
Nick Fletcher, previously managing director of civil engineering, has taken on leadership of the infrastructure business.
Paddam had previously worked for Carillion, May Gurney and Costain.
Morgan Sindall said in an interim management statement last month that its construction and infrastructure forward orders had grown 4% in the first three months of this year.