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David Giammona has a diverse work experience spanning several companies and roles. David recently joined iVision in 2019 and currently holds the position of Manager Converged Network Engineering since February 2022. Prior to this, they served as a Network Engineer Team Lead and Senior Engineer II at iVision. From 2012, David worked at The Armory, where they held the role of President. David also worked at Meridian IT Inc. as a UC Engineer from 2015 to 2019. Before that, they held various roles at WC Bradley, including Infrastructure Architect, Infrastructure Team Lead, Network Engineer - Senior, and Network Engineer - Intermediate. David's earliest work experience was with the US Army, where they served as an Army National Guardsman, participating in numerous deployments and missions, including Operation Iraqi Freedom and Operation Enduring Freedom.

David Giammona attended Columbus State University from 2002 to 2011, but it is unknown if they obtained a degree or studied any specific field. David also obtained several additional certifications throughout their career, including PCNSE6 from Palo Alto Networks in March 2016, ACE from Palo Alto Networks in January 2016, CCNP from Cisco in May 2015, and JNCIA-FWV from Juniper Networks in November 2007. It is worth noting that David has mentioned that they have the CCNA certification from Cisco, but the exact month and year of obtaining this certification is unknown. Additionally, David holds the CMNA certification from Cisco Meraki, but the information about when this certification was obtained is also unknown.