Jon Whowell will be the PR and lobbying agency's sole adviser based in the Midlands, handling clients involved in the property development and retail sectors.
He will begin his new position of regional associate in April.
Whowell said: 'The company wants to expand its client base. The world of PR is not just London, and the East Midlands is a thriving region.'
Whowell is policy adviser for comms and community involvement.
Previously, Whowell worked as a PRO at Corby Borough Council.
The assembly is responsible for housing, planning and transport. It also scrutinises the work of the East Midlands Development Agency.