The Obama administration has tapped former Microsoft executive Kurt DelBene to take over managing the online health-care enrollment system from Jeffrey Zients, Health and Human Services Secretary Kathleen Sebelius announced Tuesday. He will serve as an unpaid adviser.

DelBene, who is married to Rep. Suzan DelBene (D-Wash.), most recently served as president of the Microsoft Office Division and will begin Wednesday. Zients, who is scheduled to head the National Economic Council beginning in February, had requested a month's time to prepare for his incoming West Wing assignment.

"Kurt has proven expertise in heading large, complex technology teams and in product development," Sebelius wrote in the HHS blog, adding he will serve in the role at least until the end of June. "He will be a tremendous asset in our work."