Willie became a Fellow of the Chartered Institute of Bankers in Scotland in 2003 and for a period of 11 years, was responsible for Clydesdale Bank’s corporate, agricultural and private banking business across Ayrshire and Arran. In 2013, he established Willie Mackie Consulting Limited, providing business consultancy services to a wide range of clients predominantly based in Ayrshire. He is a past President of the Ayrshire Chamber of Commerce and Industry and currently Chair of Taste Ayrshire. In March 2014 Willie was appointed Regional Chair of Ayrshire College by the Cabinet Secretary of Education and Lifelong Learning.
Willie is also a board member of Colleges Scotland, College Development Network, Skills Development Scotland, a member of the Ayrshire Economic Partnership Board, a board member of the East Ayrshire Community Planning Partnership and a member of the East Ayrshire Business Enterprise Board. In May 2014 he became a Trustee of the Ayrshire College Foundation.