Bill Gallagher is joining Leightronix as head of IPTV business development, overseeing the company’s Luxevision initiative that includes the “GoBackTV by Aurora” line of digital products…Michael Strange is the new CTO at mobile imaging software solutions provider Mitek Systems Inc., responsible for leading the technological advancements of Mitek’s mobile imaging software solutions and finding new markets for the technology to serve both the banked and underbanked industry segments. Dr. Grigori Nepomniachtchi was named chief scientist and will report directly to Strange…Northeast data-center, cloud and managed-services provider Xand Holdings LLC named Keith Markley as COO, managing the company’s expansion of three data centers in New York, Connecticut and Massachusetts…Pete Shah now is senior vice president/Worldwide Sales at cloud provider Commtouch. He most recently served as senior vice president at InfoVista…SeaChange International tapped David McEvoy as general counsel, reporting to CFO Michael Bornak. McAvoy has worked at ATG (acquired by Oracle), VeriFone Systems (acquired by GTCR), Aprisma Management Technologies (acquired by Concord Communications) and The Learning Company/Broderbund (acquired by Mattel and The Gores Group). He also did M&A for The Gores Group.