Nathaniel "Nat" Guy is a Lead User Interface Developer in the Human Interfaces Group (http://www.hi.jpl.nasa.gov) at the NASA Jet Propulsion Laboratory. He has Master’s degrees in Computer Science and in Aeronautics & Astronautics, both from the University of Washington. Prior to joining JPL, Nat spent five years as a software engineer at Nintendo of America, and has also worked on software testing for SpaceX and ground system software development for the Hakuto Lunar XPRIZE Team in Japan. At JPL, Nat builds highly test-driven 3D interfaces for AR and web-based platforms to support mission operations and planning for the upcoming Mars 2020 rover mission.