William Mallory graduated from Boston Trade High 1951 and served in the U.S. Air Force in Germany from 1953 to 1957. Mallory joined Draper (formerly the MIT Instrumentation Lab) in 1960 as a technician working on Polaris. In addition he attended night school at the Lowell Institute, Northeastern College, where he studied electrical engineering and computer science.
At Draper, Mallory worked as a technician wiring models and testing computer hardware first for Polaris program and then for the Apollo program. He was then promoted to engineer and continued to work on testing circuits and running simulations.
Mallory worked at Draper for 34 years, retiring in 1994 and now resides in Virginia.