Professional Competencies He has a proven skills and knowledge in accounting, taxation and human resource management. He has a good leadership, communication, and organizational skills and possess a great work ethic and superb team and secretarial skills. Mr. Duncan has over nine (9) years of working experience in the private sector as an Accountant and Administrative Manager. He is also a QuickBooks trainer and expert and skillful in Microsoft Office Suite, internet browsing, use of computer peripheral devices and user of accounting software (Tally, QuickBooks, Sage and SAP) as well as statistical software package for social scientist (SPSS).