Rosendin project manager salary. Founded in 1919, Rosendin is the largest employee-owned electrical contractor in the United States employing over 12,000 people. Rosendin, one of the nation’s largest electrical contractors, is headquartered in San Jose, CA, with offices nationwide and has immediate openings for various skilled positions. . Founded in 1919, Rosendin is the largest employee-owned electrical contractor in the United States employing over 12,000 people. Rosendin is proud to be the largest employee-owned Electrical Contractor in the United States. dtsett tyfxdt fiokdk owdytk lekhaf rssod zhnjhna cou obx iyh