Engineering consultancy WSP-Parsons Brinckerhoff has secured a contract to work on the new Three Snowhill office development in Birmingham city centre.
The company will provide structural, civil, highways and ecology services on the 16-storey project alongside lead contractor BAM Construction when work starts in September.
The firm is behind the building's sloping façade design.
WSP-Parsons Brinckerhoff has a long connection to the project, having previously been involved in 2006 when a 23-storey hotel and 43-storey residential complex was originally earmarked for the plot behind Snow Hill station.
Associate director Joe Smith said: "We are delighted to have been selected by developer Ballymore Properties, to work under BAM Construction on one of the most important office developments in the region, providing London-grade office space in this continuously evolving city.
"We are approaching ten years of working on this site, having been involved in the original development, so it's great to be seeing this through, not only for the company, but for Birmingham as well.
"The redevelopment, as part of the Snow Hill Masterplan by renowned architect Sidell Gibson, will transform this business district and encourage more investment in the city, capitalising on the growing interest from the investment community both at home and overseas."
The Birmingham office of WSP-Parsons Brinckerhoff has previously worked on the Bullring, Radisson Blu hotel and supported the design of Grand Central shopping centre.