This study attempts resolution of certain ambiguities of the corporate elite - Chief Executive Officer (CEO) and Top Management Team (TMT) - effect on corporate internationalization strategy. This work hypothesized that curvilinear relationship exists between CEO position tenure, TMT size, and TMT tenure heterogeneity and a firm's internationalization, by combining previous upper echelon theory and processing international business school perspective. Our detailed empirical findings indicate that CEO and TMT characteristics show a nonlinear relationship, based on 165 samples of Taiwanese firms operating in a technologically intensive industry. An inverted U-shaped relationship exists between CEO position tenure and TMT size regarding a firm's internationalization. These associations are an inverted U-shape, when internationalization level facing TMT tenure heterogeneity is accounted for.