Mott MacDonald has named Mike Haigh as its group managing director of its $2bn business.
He will be responsible for the day-to-day management and operations of the firm, which has 16,000 staff working across engineering, management and development consultancy.
Haigh joined Mott MacDonald in 1981 as a graduate engineer working on international projects in the water sector.
He joined the executive board in 2013 and was most recently managing director of Mott MacDonalds Europe and Africa region, which has more than 7,000 staff and $1bn annual revenues.
Haigh said: As an employee for over 30 years I know just how innovative and creative Mott MacDonald can be.
The needs of the worlds population and technology are changing fast and we have tremendous opportunities to work with our clients and partners to create clever, intelligent solutions that enhance value for them, their stakeholders and the wider society.
There are exciting times ahead for our industry and Mott MacDonald and Im delighted to be taking up this role, working with such talented colleagues.