St Albans-based Glencar revealed it was looking forward to another good year after reporting profits up to £2.3m from revenue up two-thirds to £160m in the year to September 2021.
Over the period, its average contract value jumped 40% to £9.5m from £6.8m, thanks to notable jobs in Harwell, Andover and Bicester.
Glencar managing director Eddie McGillycuddy said the firms had been recruiting strongly with the average headcount up to 135 staff.
He said: “Glencar continues to invest in its people and infrastructure to support our rapid growth.
“We have hired over 80 new employees in the year, of which three are members of the senior leadership team.
“The company opened a new office in Manchester and moved to larger premises in Birmingham, as part of the regional growth plan”
He added: “We have identified other growing sectors and will seek to expand into these, taking advantage of the opportunities available.”