Mr. Justin Likar has 20 years of experience working in areas of space radiation effects, spacecraft charging effects, radiation hardness assurance and space weather.  Justin spent over 15 years working for the commercial and defense industry (first Lockheed Martin Space Systems then Goodrich). He has been with the Johns Hopkins University (JHU) Applied Physics Laboratory (APL) for nearly 5 years where he is presently a Senior Engineer and Chief Technologist in the Space Environmental Effects Engineering group. He is also an instructor with the JHU Whiting School of Engineering.  Most recently he has supported, in lead capacities, missions including Europa Clipper, IMAP, a number of defense projects and activities relating to optimization of heavy ion Single Event Effects (SEE) test techniques. Justin remains active with several professional societies, including IEEE, where he frequently contributes to the Transactions on Nuclear Science, Transactions on Plasma Science and the Nuclear Space Radiation Effects Conference (NSREC); also the American Institute of Aeronautics and Astronautics, where has served as a Technical Committee Chair (Atmospheric and Space Effects) and is an Associate Fellow. He recently co-convened the Space Environment Engineering and Science Applications Workshop (SEESAW) and serves on the Steering Committee for the Spacecraft Charging Technology Conference (SCTC) and Applied Space Environments Conference (ASEC).