David Reller is a seasoned IT professional specializing in directory services and infrastructure support, currently serving as a Senior Directory Services Engineer at 3M since September 2025. With a robust background that includes roles such as Senior Infrastructure Specialist at Uponor and Information Protection Advisor at Cigna, David has extensive experience in Active Directory, Microsoft 365 administration, Azure AD, and Exchange support. Prior roles also encompass engineering and oversight of global environments at Delta Air Lines and technical support in various capacities across multiple organizations. David holds an Associate's degree in Computer Support from St. Paul Technical College, completed in 1998.
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