Miller joins Edelman as co-chair, Europe and Commonwealth of Independent States (CIS), employee engagement, which involves helping clients, and global director of Edelman Talent Engagement, which covers the agency.
He will co-chair the employee engagement practice with Nick Howard and will focus on developing it outside the UK.
In the Edelman Talent Engagement role he will work alongside chief talent officer Claudia Patton.
Miller has previously held roles at Labatt Brewing Company in Toronto, Labatt’s parent company Anheuser Busch InBev in Belgium and in agencies.
Edelman Europe & CIS chief executive Michael Stewart said Miller would help the agency achieve its strategy of organic and non-organic growth in the region.
"He will play a critical role in ensuring Edelman’s culture and values are maintained as we continue to scale."