 She studied philosophy at the University of Berlin, metallurgy at Technische Hochschule, and physics at University of California, Los Angeles (BS, 1945; MS, 1947, Ph.D., 1955).Kallmann-Bijl was employed by RAND Corporation (1953–64), was a guest professor at University of Utrecht (1964), and authored several papers.She served as a consultant to the United States Air Force and NASA, and was a member of the National Academy of Sciences.