He worked in Argentina, Brazil, Germany, USA, France, China (PRC) and Hong Kong.

Acted as Director or Managing Director (CEO) in several industrial exporting corporations such as: FASA-COMABRA (Wilson Argentina and Brazil), KAIOWA SA (Brazil), HUANCAYO Group (Swift-Armour, Carnes Argentinas, Frigorífico Rioplatense, Comalfri, Consignaciones Rurales, Inducuer), Cartonex Bernal (Citibank NA, Celulosa Argentina), Massera-Dolce Neve, Bestalong Group (HK), Beijing Kaidi Environmental Engineering Corp. (China, PRC), TyC Asia Corp. (HK), GRD Leather (Argentina), etc.

Horacio Michelini has developed activities as Senior Consultant in the industrial and marketing areas for international customers such as: Philips Morris (Argentina), The World Bank (Brazil), Alston Engineering (Germany and China), Bunge y Born Group (Brazil and Argentina).

As President of Altec Engineering Ltd. Projected, built and start up a meat processing plant in Sao Paulo for Kaiowa SA (Brazil).

Currently, as President of Tresma Services Corp. has been retained by a large leading meat packer in Argentina for the development of its Leather Division, starting exports to China and the USA. As President of SABT, South American Breeding Technologies SA, a company devoted to the export of bovine genetic to more than twelve countries, is executing projects in China (PRC) and Nigeria.

Horacio Michelini has a degree in Chemical Engineering (IESE -suma cum laudae-, Buenos Aires, Argentina) and Industrial Engineering (MacKenzie University, Sao Paulo, Brazil), he has been Professor of Industrial Chemistry at the Argentinean Catholic University. He was decorated by Brazil, Colombia, Chile and Italy (Lucca), for his professional achievements. He speaks fluently Spanish, English, Portuguese and conversational French and Italian.