Cremin will be managing the integration of recently merged companies Hexfax and Maestro Interactive, which will be brought under the Database Group Interactive umbrella.
Cremin comes to the Database Group from the travel and leisure market. She was previously sales and marketing director at high-tech target golf driving range Topgolf.
Richard Lees, chairman of the Database Group, said: "As a group we have expanded rapidly, moving into the digital arena in addition to our traditional focus on DM data. We are delighted to welcome Dawn on board to expand our marketing function at what is a crucial stage in the company's growth plans."
The Database Group currently covers the automotive, financial, travel, telecoms and retail sectors. Clients include Iceland, Renault, O2 and Brittany Ferries.