Sir Robert McAlpine has appointed WYG chief Paul Hamer as its new CEO.
Mr Hamer will join the contractor from WYG, where he has been chief executive since 2009. He will join the board on 31 July.
Prior to WYG, Mr Hamer was managing director of VT Nuclear Services.
He has also held several senior executive positions in the oil, chemical and petrochemical sectors.
He takes up the role after Tony Aikenhead stepped down as SRM’s chief executive in July last year.
Mr Aikenhead, who joined SRM in 2007 to lead the company’s bid for the 2012 Olympic Stadium deal, left just nine months after his appointment.
He was only confirmed as chief executive in November 2015 and had planned to retire in 2018.
In April the contractor posted its latest accounts, which recorded an operating profit of £1.3m for the year to 31 October 2016, compared to a £44.4m loss the prior year.
However it revealed a pre-tax loss of £43.2m after writing down the value of its pension scheme.
Commenting on Mr Hamer’s appointment, SRM chairman Gavin McAlpine said: “He has an outstanding reputation within the industry and a proven track record for delivery, both as a client and as a contractor.
“At WYG Paul refocused the business around driving value for its clients. At Sir Robert McAlpine, we are focused on our clients’ needs and delivering exceptional value.
“I am certain that Paul will challenge us all to excel in supporting these objectives.”
Mr Hamer said: “I am looking forward to working with the McAlpine family, the board and my new colleagues to create and drive future success for Sir Robert McAlpine.
“We will be building on the key strength of engineering excellence whilst leveraging the tradition and heritage of this great company.
“We aim to enhance our focus on our clients and their needs whilst ensuring that we deliver excellence in all of our operations.”