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John Casselman currently serves as the Sales Engineering Manager at Ooma, Inc., a position held since April 2019. Prior experience includes a Senior Solutions Consultant role at Five9 from November 2017 to March 2019, and an extensive tenure at ShoreTel from September 2003 to November 2017, where John held various positions including Cloud Service Design Specialist and Manager of Service Design Specialists for the West and Mountain West regions. Earlier career experiences feature product marketing roles at Extreme Networks and 3Com, as well as a Networking Engineer position at Quantum Corporation. John possesses a strong background in technical sales, pre-sales support, and customer solution design within the telecommunications sector.