Johnnie Greffenreid

Johnnie Greffenreid is an IT professional with extensive experience in system administration and information assurance. Currently serving as an IT Specialist at PEO C3T since April 2023, Johnnie has held a Lead Senior System Administrator position at KeyW Corporation and a Senior System Administrator role at Sotera Defense Inc. since February 2016. Additionally, Johnnie has been a System Administrator at Link Solutions, Inc. since October 2013. Previous roles include System Engineer at Broadleaf, Inc. and System Administrator at STG Inc. and Log SEC Corporation. Johnnie holds a Bachelor of Applied Science degree in Computer and Information Systems Security/Information Assurance from Towson University and an Associate of Arts and Sciences degree in Computer Science from Harford Community College.