Ruben Harold Halfhuid has 40 years of experience in Marketing and Operations on a Sr. Executive Management Level in different parts of the world for Fortune 500 Companies like, Texaco, Chevron, and Alcoa, but also for National Companies like Vredestein, Cebeco Handelsraad in Holland and MRS Holding in Nigeria. Ruben held the following positions Managing Director Alcoa: June 15, 2012, to March 01, 2020 ,Chief Operating Officer of MRS Holdings Limited , Chevron  General Manager Chevron West Africa: 2005-2009 leading the Managing Directors of Congo, Cameroon, Nigeria, Benin, Togo, and Cote D’Ivoire The sectors involved in were: Agriculture , Mining & Processing , Management , Energy etc. Team member involved in Acquisitions, Divestments, Transition Management and Change Management in Africa, South America, Europe, and the Caribbean. Ruben is a result-oriented business leader who gets the job done by motivating his team members to focus on the end-result. Managing Director Alcoa 2012 to 2020 ,Chief Operating Officer of MRS Holdings Limited , Chevron  General Manager Chevron West Africa: 2005-2009 leading the Managing Directors of Congo, Cameroon, Nigeria, Benin, Togo, and Cote D’Ivoire.