Margaret Hamilton is a computer scientist, systems engineer and business owner. She was Director of the Software Engineering Division of the MIT Instrumentation Laboratory, which developed on-board flight software for the Apollo space program. In 1969, in a critical moment of the Apollo 11 mission, Hamilton’s team’s work prevented an abort of landing on the moon. She was 32 years old when the Apollo Lunar Module landed on the moon while running her code. She designed software robust enough to handle buffer overflows and cycle-stealing, which was instrumental in the success of the Apollo 11 moon landing. Hamilton is also credited with coining the term “software engineering.” In 1986, she became the founder and CEO of Hamilton Technologies, Inc. in Cambridge, Massachusetts. The company was developed around the Universal Systems Language, based on her paradigm of Development Before the Fact (DBTF) for systems and software design. Hamilton was born on August 17, 1936.