Co-owner of capital group CENTROBUD, company owning a network of DIY/building materials markets in Mazowsze area. The company is also running it's own e-commerce site. Centrobud is member of PHMB group of building materials suppliers network. Running own consulting company "Marcin Gosiewski Doradztwo i Zarzadzanie", providing consulting in investor relations, IT strategy, relations with suppliers and outsourcing strategy. Working as co-owner, general director and CTO of BV Grupa s.c., company working in IT, investments and real estate areas under own brands BV Systemy, BV Serwis and BV Nieruchomości. BV Grupa has countrywide 24h/day IT support, software house and system integration team.Shareholder of PATICARIUS - company owning pharmacies in Warsaw area. In the years 1991-2006 founder, shareholder and President of a privately held polish IT company BiG Vent S.A. which operates on Polish market since 1992. Specialises in Data Storage Systems but also operated on automotive software market (through daughter company Motosoft) and internet (through daughter company Netlandia / BiG Vent Okablowanie). Company sold in 2004 to a listed company CSS/Comp.Later was involved in two startup projects: World IT Systems, newly formed polish IT niche distributor (Technical Director). Responsible for setting up technical division and co responsible for sales - introduction of company's products to polish market. Director of Warsaw Division of SoftwareMind S.A. - setting up a Warsaw office for Cracov based company and introducing company's offering to major telekoms including TPSA, Netia, Polkomtel and others.Knowledge of IT Market and experience in management & Venture Capital Funds relations.