John Callaghan, based in California, United States, is currently a Senior Software Engineer at Sigray, Inc.. John Callaghan brings experience from previous roles at Napa Software Development, QT Ultrasound, Raydiance, Inc. and Positronics Inc.. John Callaghan holds a 1986 - 1987 Columbia University. With a robust skill set that includes Software Development, C++, C#, Device Drivers, Embedded Systems and more. John Callaghan has 2 emails and 1 mobile phone numbers on RocketReach.
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