Rhett Siesener

Manager, Security Engineering at OutSystems

Rhett Siesener is an experienced engineering manager specializing in cloud product security, currently serving at OutSystems since April 2021. Responsibilities include overseeing product security architecture, application security, vulnerability management, and cloud security automation. Previous roles include managerial positions at Mastercard, focusing on secure software development, and consulting as a Senior Technical Program Manager at Lumeris. Rhett has significant experience in application security from a lead role at UniGroup and technical program management at Express Scripts. Early career positions encompass systems engineering at Panera Bread and service desk analysis at Enterprise Holdings. Rhett holds a Master of Science in Cybersecurity and an MBA from Webster University, along with a Bachelor of Science in Financial Planning and Services from the University of Missouri-Columbia.

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