The new offices at the recently refurbished seven-storey Derwent House provide desk space for 200 staff.
Mott MacDonald has had a presence in Sheffield for more than 80 years and worked on such projects as Vulcan House, the headquarters of the UK Border Agency, the city's Building Schools for the Future programme and the £56m Great Yorkshire Way link road.
Mott’s Sheffield team is currently working on the Lower Don flood alleviation scheme for Sheffield City Council, the £120m Glassworks retail and leisure scheme for Barnsley Metropolitan Borough Council and the National College for Nuclear in Cumbria.
The seven-storey Derwent House recently underwent a major refurbishment to bring it in line with the latest building and energy efficiency standards. The revamp included an overhaul of the common areas and reception to create a larger entrance, as well as the creation of staff amenities.
John Bowes, Mott MacDonald's office lead for Sheffield, said: "We’re excited to be boosting our presence in Sheffield. By strategically placing ourselves in the heart of the city centre we will be able to better support our clients throughout the north of England. We will also be able to utilise our modern space to host industry events and talks from the likes of the Institution of Civil Engineers and the Institution of Structural Engineers."