Since December 2000, Marina Sidiropoulou has been working as Administrative Support Staff for the Information Technologies Institute (ITI) under the Centre for Research and Technology Hellas (C.E.R.T.H.) In 1997 – 2000 she worked for PANSYSTEMS S.A., a telecommunications and computer systems sales company, where she held the posts of sales secretarial support, accounting assistant, and sales staff. Her remit included preparing tender files for the greater public and private sector, market research, and corporate product orders.