Sean has developed, tested, and operated spacecraft in LEO, GEO, and deep space. Missions supported include Boeing/Hughes 601, Boeing/Hughes 702, Kepler, WISE, GeoEye-1, and IKONOS. Sean supported several NASA Discovery proposals, and was the lead systems engineer for the SUDA instrument (part of the Europa Clipper mission). He has held a security clearance. Previous employers include Boeing, Ball Aerospace, GeoEye/DigitalGlobe/Maxar, and Microsemi/Microchip.