Mark Grennan

Mark Grennan has a diverse work experience in the technology industry. Mark started their career as a Web Developer at Telaflora in 1995 and then worked as a Systems Administrator at Fleming Foods from 1998 to 2000. Mark then joined Hertz Rent a Car, where they served as a Linux System Administrator from 2000 to 2006 and later as a Sr. System Administrator for Hertz.com from 2000 to 2007. Mark then worked as a Gold Support Technician at Dell from 2007 to 2008. Mark's next roles were as a Data Center Manager at Crossroads Wireless from 2008 to 2009 and at Meridian Data Systems, Inc. from 2009 to 2010, where they specialized in open source systems. From 2010 to 2018, Mark worked as a DevOps Engineer and Database Administrator at Weather Decision Technologies Inc., ensuring the uptime and functionality of various weather data systems. Mark then transitioned to a DevOps Engineer role at DTN in 2018 before becoming a DevOps Technical Lead at MidFirst Bank in 2019.

Mark Grennan attended the University of Central Oklahoma, but the specific years and field of study are unknown. Mark also attended Putnam City West High School. Mark holds a certification in MySQL, Linux, and Security, although the institution and date of completion are not provided.