MacLeod, who reports to executive chairman Paul Mathieu, will have a UK focus and a brief to significantly raise the agency’s profile.
She said: ‘Herald has built a comprehensive European offering, but its UK profile has been neglected.’
MacLeod led the tech practice for eight months at Beattie Media. Previously she worked at Firefly Communications as a senior account director for four years.
She will oversee a UK staff of 25. Existing clients include Olympus and LG Electronics.
Herald was founded in London in 1988 and has offices in Paris, Munich, Milan, and Prague. It opened a Warsaw office in February.
The agency has been without its MD post since it was bought by Fleishman-Hillard in 2001. The previous MD was Esene Page, who had a Europe-wide role and left at the time of the aquisition.