Collen has over 13 years of experience (7 years of which are post articles). He completed his articles at Moore Stephens in Benoni (East Rand). His working experience is spread across Audit, Accounting and Finance and he has worked as an Accountant, Finance Manager Group Financial Manager.

He has extensive management experience in the finance industry with regards to preparation and review of financial statements, budgeting and forecasting, financial management, taxation (both direct and indirect), policy review and formulation

His industry experience includes the following:

Aviation, telecommunications, construction and property development, Non-profit companies and community development trusts, financial services, Service industries (Cleaning and security), manufacturing, oil and petroleum industries, Gaming (Entertainment) and Health and Pharmaceuticals