He will lead creative strategy for some of the agency’s key clients, working in its London office and reporting to Ed Beard, the head of creative strategy.
Pugsley held a number of strategic planning roles in his native Australia, at JWT, Mindshare and Sputnik Agency, before coming to the UK to join McCann London in 2012.
Beard said: "Harry’s passion for innovation and his desire to work collaboratively make him a perfect fit for DigitasLBi. He also has an impressive and diverse background, with experience ranging from advertising to media and digital agencies.
"It's going to be really exciting seeing how the unique perspective he brings helps guide the solutions we create for our clients."