This document discusses different models of professional roles for engineers: 1. Savior - Engineers act as saviors by using technology to solve social problems and lead societies to prosperity. 2. Guardian - Engineers guard the interests of the public and determine what technologies best suit society using their expertise. 3. Bureaucratic Servant - Engineers serve organizations and employers by solving problems to achieve management goals. 4. Social Servant - Engineers exhibit social responsibility by translating societal needs and aspirations into technological realities. 5. Social Enabler and Catalyst - Engineers change society through technology, assist in decision making, and minimize technology's negative effects. 6. Game Player - Engineers are assertive players in organizations