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Mark Tierney

Chief Technology Officer, SEI Sphere
areas of expertise
IT enterprise architecture
IT strategy and solutions
IT processes and operations

Mark Tierney is the Chief Technology Officer of SEI Sphere, which provides organizations with cyber protection designed to optimize, secure, and support the complex and evolving technology needs of today’s businesses. 

In this role, Mark provides strategic direction that oversees the processes that drive operational efficiency and technology innovations within the solution.

Prior to this role, Mark served as the Director of Technology where he lead the management, strategy and execution for a wide variety of technology services for SEI’s enterprise.  Included among those services are data center and network operations, corporate IT and Help Desk operations, as well as database management, system administration, middleware and application support operations.