Sharon Marshall will step into the role after joining the company a year ago as national account manager.
Before joining Mortgage Brain, Marshall worked for Santander and Countrywide.
Its senior board has received a further boost, with the promotion of Suzanne Green from head of marketing to its operations board as director of marketing and partner propositions.
Mortgage Brain’s sales and marketing director, Roger Crocker, said: “Following the successful launch of major enhancements to our technology solutions in readiness for MCD [Mortgage Credit Directive], including the launch of our new secured loans sourcing system, LoansBrain, we are entering another period of exciting times within the company. I’m delighted to welcome Sharon and Suzanne to the operating board.”