He originally joined the communications and information technology company in 2006 as president of that unit, later assuming the chief information officer and corporate vice president roles in 2010.
He will remain as CIO and corporate VP and will succeed John Heller as head of IT services.
CEO William Brown said the IT services unit doubled in size under Hengst’s previous tenure.
In his new position, he will manage the company’s domestic and international IT operations.
Prior to joining Harris, he served as senior vice president of General Dynamics’ (NYSE: GD) Army solutions business unit.
He is also a retired U.S. Army colonel and served as CIO at Special Operations Command at MacDill Air Force Base.
The company recently won a $390 million contract to provide handheld and backpack tactical radio systems for the U.S. Southern Command.