The education sector recruiter has taken a 13th floor suite on a five-year lease at £7.50 per sq ft.
Colliers International and Savills are joint agents on the Topland scheme.
Alex Tross, Associate Director in the office agency team at Colliers, said: “This is the first office letting in Edgbaston in 2013. Competition to attract occupiers is keen, so Topland’s investment in a new reception and common areas will hopefully prove a draw.”
Mark Ashmore, commercial manager for Connex Education, said: “We are delighted to have found a new location for our team in Birmingham and look forward to a new era at Cobalt Square. The new office is ideally suited to our needs and to our continued growth.”
Suites from 1,500 – 4,400 sq ft are available at the scheme, which is close to Five Ways Island.