The new contract will see 35 new roles added to its already 250-strong team in the city.
Graham Stein, managing director of Parseq’s contact centre business says: “We’re delighted to achieve a multi-site partnership with BT and the creation of further employment and investment within Glasgow.
“This is one of a raft of new business wins we’ll be announcing over the coming months as we continue to grow our presence in Glasgow
“This success is testament to the hard work and dedication of our employees and the business’ unique approach to providing multi-channel customer communication services. “