Through his long-standing managerial and consulting career, he is constantly improving and working on complex e-commerce and e-business systems, focusing on business, conceptual and functional aspects. He has participated in the development of a large number of e-projects at local, national and international level and has worked as a senior consultant on several European Union IPA projects. 

Siniša is the author of dozens of professional articles and essays, and is editor, author and co-author of several guides and books on e-business co-financed by the EU. He is certified Google AdWords professional, Adobe Web site designer and e-business and e-commerce CEC™ consultant.