 In 1962, he returned to the United States to take a tenured position as an Associate Professor in the School of Electrical Engineering at Purdue University.In 1965, he became a Full Professor jointly appointed in the Departments of Electrical and Computer Engineering and Applied Mathematics at Rice University.In 1990, Figueiredo moved to Irvine, California, where he was a Professor in both the Electrical Engineering and Computer Science Department and Mathematics Department at the University of California at Irvine.