Waite was previously business director at marketing agency Billington Cartmell, and prior to that, founded agency Flamethrower.
"I come from an ‘integrated’ background, which means I’m always looking for that big idea that resonates with the target audience and delivering that message across relevant channels that reach the audience," explained Waite.
Waite will work closely with events and communications director Debra Nightingale to develop strategy and direction of new campaigns for clients.
He added that 2013 would be a "challenging climate for our clients – we appreciate that – and are working with them closer than ever to maximise the impact of every event".
"Going into 2013, our clients are committed to delivering their events calendar, but with smaller budgets available," said Waite. "We therefore need to add even more value to alleviate this pressure."
It has also been delivering work for new clients Holland & Barrett and Canalys this month.
Waite added: "We need to be constantly innovating the way we work, how content is delivered to delegates - new technologies are adding a huge array of possibilities now - and proving ROI."Meanwhile, MCM chairman Neil Crespin said: "These are exciting times at the group and we are determined to hire the best talent to provide the best services to our clients and prospects. Bringing in someone with Lee’s experience is a clear example of that strategy in action."