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Keith Greisser has extensive experience in telecommunications, currently serving as a Technician at Wireless Network Group since September 2014. Prior to this role, Keith worked as a Tower Technician III at Mastec Wireless Services, where responsibilities included installing, maintaining, and upgrading AT&T's cellular systems, involving climbing structures up to 350 feet and installing antennas for GSM, UMTS, and LTE. Additionally, Keith held the position of Microwave Radio Technician III at MasTec Network Solutions, overseeing a test lab for AT&T microwave equipment and preparing equipment for field installation. Earlier experience also includes serving as an Installer at Wireless Network Group from 2007 to 2010. Keith Greisser graduated from Mt. Olive High School in 2007 with a diploma.