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Arnaldo Ortona has extensive work experience in procurement and purchasing. Arnaldo currently holds the position of Chief Procurement Officer at USIMINAS since November 2018. Before this, they worked at Exiros for several years, where they held various roles including Regional Director for Central America, Regional Director for Europe, and Global MRO Director. Prior to Exiros, they worked at Deiulemar as a Purchasing Manager. Arnaldo also had previous roles at Exiros as the Purchasing Regional Manager for Asia Pacific and as the MRO Leader.

Arnaldo Ortona completed a 4-year Bachelor's degree in International Economics from the University of Naples 'Parthenope' between 1987 and 1992.