Mats Williamson was parachuted in to the top job in July following former chief executive David Fison’s departute after failing to stem -losses in the firm’s PFI building operations.
Skanska’s results for the first half of the year showed on operating loss of £41 million on revenues of £758 million.
Mr Williamson, with the business since 1981, told Swedish magazine Byggindustrin: “It is a great challenge to change Skanska UK into becoming better than what it is at present.”
The losses on the PFI schemes relate to three projects, understood to include hospitals currently under construction in Derby and Nottinghamshire.
Mr Williamson said: “We need to deliver black numbers now but we also need to improve and become more competitive. It means investing in people. PFI contains more risk than other projects. The important issue is to be able to handle this risk or the results will never be great.”