Brett Lambert is well known in space circles from his time as executive vice president of DFI International, a Washington-based consultancy firm he helped to build and sell in 2007. Credit: SpaceNews

WASHINGTON — Brett Lambert, who as acquisition adviser at the Pentagon led a study saying the U.S. solid rocket motor must downsize following the space shuttle’s retirement, is joining Northrop Grumman Corp. as vice president of corporate strategy.

Lambert starts his new job with the Falls Church, Virginia-based aerospace contractor Jan. 26, reporting to Northrop Grumman’s chief strategy officer Mark Caylor. Lambert replaces Stanley Szemborski, who has retired from the company.

In a Jan . 20 press release announcing his appointment, Northrop Grumman said Lambert will lead development and implementation of Northrop’s corporate and business focus area strategies, and will serve as the chair of the strategic development council.

Lambert is well known in space circles from his time as executive vice president of DFI International and managing director of DFI Investment Partners, a Washington-based consultancy firm he helped to build and then sell in 2007.

He joined the Pentagon in 2009 as a deputy assistant secretary, advising Ashton Carter — DoD’s then-undersecretary for acquisition, technology and logistics and now President Obama’s pick to replace Defense Secretary Chuck Hagel this summer — on manufacturing and industrial base policy. It was in this position that Lambert led the Pentagon’s 2010 study on the U.S. solid rocket motor industry.

After leaving the Pentagon in mid-2013, he became an executive in residence last February at Renaissance Strategic Advisors, a defense and aerospace consultancy that counts former House military space staffer Josh Hartman as a partner.

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Brian Berger is editor in chief of SpaceNews.com and the SpaceNews magazine. He joined SpaceNews.com in 1998, spending his first decade with the publication covering NASA. His reporting on the 2003 Space Shuttle Columbia accident was...