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Jeffrey Marcellus is an experienced supply chain and operations manager with a career spanning over two decades. Currently serving as Sr. Manager of Supply Chain at Lumentum since October 2018, Marcellus has previously held senior management roles at Juniper Networks, where responsibilities included overseeing manufacturing operations and the transition of BTI into the company. Prior to that, Marcellus was Director of Global Planning at BTI Systems, managing planning processes and supplier forecasting. Additionally, Marcellus held various roles at International Datacasting, ranging from Director of Manufacturing & Planning to Manager of Sales Administration, and gained foundational experience as a Senior Network Planner at Tropic Networks and a Systems Engineer at Nortel Networks. Marcellus holds a B.Eng in Computer Systems from Carleton University.