Former dwp group chief executive Brenton Mauriello is back in the position, following a brief stint as executive chairman.
Leone Lorrimer had been group chief executive following the full financial merger of dwp and Suters architects in April 2017.
A statement from dwp said it was realigning its leadership “to further develop the organisation’s position on the international stage”.
“dwp will be saying goodbye to Leone Lorrimer who leaves the company as CEO,” the statement said.
“Leone was instrumental in developing the relationship between dwp and Suters which lead to the merger, and drove through the implementation of that union for the first year.
“Now, in keeping with the company’s business strategy to develop into an international design powerhouse by 2020, dwp has made two changes in the leadership. Firstly they are delighted to welcome Jo-Anne Harrison to the board of directors as independent director and they are also excited to welcome back Brenton Mauriello as group CEO.”