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Mariana Petrovic has extensive experience in human resources, currently serving as a Human Resources Business Partner at NIS a.d. Novi Sad since November 2020, where responsibilities include coordinating HR projects for approximately 1,000 employees at the Oil Refinery in Pančevo. Prior to this role, Mariana was an HR Manager at MPC HOLDING, overseeing HR processes for Balkans Real Estate and Confluence Property Management, after previously working as an HR Business Partner for Confluence Property Management. Additional experiences include serving as an Independent HR Consultant for a major telecommunications project, HR Director at the Tax Administration of the Republic of Serbia, and HR Manager at Sport Vision Serbia. Mariana's early career includes significant roles at Deloitte as HR Senior Coordinator, Jugohemija a.d. as HR and Quality Manager, and Astra Simit as Quality Project Engineer. Mariana holds an Engineer's degree in Quality Management from the Faculty of Organizational Sciences, obtained between 1997 and 2004.