Siddall, 46, joins from airports services firm Alpha Airports Group, where he was also finance director. He had previously been finance director of Balfour Beatty (1990-95) and Manweb.
The move will see him reunited with former Balfour boss Peter Mason, who is chief executive of Amec. Mason said: “We are delighted to have Stuart join Amec. He brings with him the best of both worlds –considerable experience in developing a series of businesses, together with a sound knowledge of engineering and construction.”
Amec director of corporate affairs Tony Williams said: “He is a team player who has got good experience in construction and a good background in services.” Siddall is expected to start in mid-to late June.
Amec’s share price was up 6p to 181p on Tuesday, the day of the announcement. One analyst said: “He looks like a good FD. He has done plc work before and has worked with Mason before.”
Siddall replaces Simon Batey, who recently left to join United Utilities.