David Bell, a 28-year accounting professional, has assumed the chief financial officer position at Potomac, Maryland-based technology company Castellum. The

Michael Polmar, a business development executive with over three decades of experience, has joined B&A as chief growth officer responsible for

Craig Martell, former head of machine learning at Lyft (Nasdaq: LYFT), has been named chief digital and artificial intelligence officer

William Manel, former capture manager at Leidos (NYSE: LDOS), has joined Peraton to serve as opportunity strategy director, FedHealthIT reported

Alexander Gates, a four-decade military and civil service veteran, has been named chief research officer at Arlington, Virginia-based cybersecurity company

John Avalos and Ted Fidder, respectively former executives at SOS International and CACI International (NYSE: CACI), have been appointed to

Jeff Babione, a nearly three-decade veteran of Lockheed Martin (NYSE: LMT), has been named chief operating officer of Sierra Nevada

Charles Pope, formerly a senior official at the U.S. Agency for International Development, has joined Precision Talent Solutions as a

Kelly Morrison, a nearly 16-year federal service veteran and a former Grant Thornton executive, has rejoined information technology company HumanTouch

Chris Braccio, vice president of human resources at American Systems, has been appointed to the board of directors for the