National security adviser John Bolton has tapped a senior Commerce Department official as his deputy.

The White House announced on Friday that Mira Ricardel, the undersecretary of Commerce for export administration, has been chosen to replace Nadia Schadlow, who resigned earlier this month days after Bolton took office.

Ricardel is one of Bolton's first senior-level hires since taking office. A slew of senior National Security Council staffers have stepped down since the ouster of H.R. McMaster, the previous national security adviser.

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Ricardel is a seasoned government official, having worked in the Departments of State, Defense and Commerce under three separate administrations. She also worked at Boeing for nine years. Bolton praised her experience in a statement on Friday.

"I selected her as Deputy National Security Advisor because her expertise is broad-based and includes national security matters related to our alliances, defense posture, technology security, foreign security assistance, and arms control," Bolton said.

"Her policy-making and interagency experience will make her a great addition to the National Security Council."

In her previous role at the Commerce Department, Ricardel helped draft the Trump administration's weapon export policy.

Ricardel is the third woman to serve as deputy national security adviser since Trump took office. Dina Powell, a former deputy to McMaster, resigned from her post in January, before Shadlow took over.