Among the experienced experts in public procurement and other eTenders at PROEBIZ is Piotr Krompiewski. As a former professional soldier, he served in the military for 12 years and reached the rank of platoon commander. He began his mission in the field of public procurement digitalization in 2013. Initially, he worked as a “liaison officer” within the JOSEPHINE development team, which focuses on preparing tenders in the public sector. Since 2025, he has moved from the Polish sales team to the international PROEBIZ team, where he provides training and consultations to system users in countries outside the Czech Republic, Slovakia, and Poland. He supports their practical implementation and helps clients effectively use tools for the digitalization of public procurement and corporate procurement.