Bachelor''s Degree Must be full-time students enrolled in a four-year college program, have a cumulative grade point average of 3.0 or greater, 30 credits completed, and be majoring in one of the following engineering disciplines: Electrical, Mechanical, Environmental, Civil, Chemical or Environmental Science. Many of our interns return to the summer program multiple times, some remain throughout the year as co-op interns, and several join our company as full-time employees upon graduation through entry-level opportunities like our LDP (Leadership Development Program) rotational management program.