Aileen is responsible for the overall accounting and tax, audit, and human resources functions of the firm. Prior to joining Hallador in 2015, Aileen spent seven years with the Liberty Media Corp group of companies in Denver, Colorado, in both a Controller and Assistant Controller role. Previously, she spent two years in Dubai as Regional Accounting Manager for British Telecom. She is a Chartered Accountant, and completed her training contract with Grant Thornton in Glasgow, Scotland. Aileen holds a Bachelor of Accountancy (Hons) from University of Stirling, Scotland.