UPDATE 2.05pm: Adam Harry, the general manager of John Holland western region, has suddenly quit his job as the company endures crucial preparations for a consortium bid to build the $1 billion Burswood stadium.
The shock departure comes as the construction firm leads the Confidem consortium, including Capella Capital and Spotless, for the right to build the stadium.
John Holland was yesterday tight-lipped about the reasons for the sudden resignation, which is understood to have occurred late on Friday.
"We can confirm that Adam Harry has resigned from John Holland," John Holland said in a written statement. "We wish him every success in his future endeavours."
A spokeswoman said the company had appointed David Marshall, the regional operations manager building, as the acting general manager, Infrastructure West. The company's focus would remain on "delivering projects for our customers in WA."
Mr Harry has been a key player at the construction company, at the forefront of major projects including $2 billion in contracts for Perth's new children's hospital, as well as works on the City Link project.
He was also in charge when John Holland won a $257 million contract to build rail track for Gina Rinehart's Roy Hill iron ore project. Project manager Samsung C&T awarded the Leighton Holdings subsidiary the rail construction, track works and infrastructure sub-contract.
Last year Mr Harry was one of the young business leaders recognised in the "40 under 40" awards.
In 2008 he was named the Young Achiever of the Year by the Australian Institute of Building and in the same year won the Ric New Medal for Excellence from the Master Builders Association.
Before joining John Holland, Mr Harry served in senior roles as the general manager of Doric construction, and has also worked with Mirvac, Westpoint and BGC Constructions.
Leighton Holdings would not comment on the sudden departure at the helm of one its big subsidiaries.
Mr Harry did not respond to several phone calls.