Robinson will take up the role in June, working for Ulster Unionist MP Michael McGimpsey.
Belfast-born Robinson served as press secretary to David Trimble and the Ulster Unionist Party from 1999 to 2001. He said: ‘I know Michael very well; we have worked together in the past and I’m looking forward to the chance to do so again.’
Robinson joined Fishburn Hedges less than a year ago. Prior to this he was corporate affairs manager at Three.
Health provision is a key issue for the new Northern Ireland assembly.