The longtime government IT leader had announced his plan to leave the Defense Department in late March.
Robert Carey, who served as principal deputy CIO at the Defense Department for three-and-a-half years before stepping down last month, revealed at his April 11 retirement party that he will join CSC as vice president of public sector, cyber.
Before becoming DOD's principal deputy CIO in October 2010, Carey spent four years as CIO of the Department of the Navy.
A veteran of the Gulf and Iraq wars, Carey was also a 2013 Federal 100 winner and was named Defense Executive of the Year for 2009 by GCN, FCW's sister publication.
CSC officials declined to comment on Carey's role at the Falls Church, Va.-based firm.
CSC ranked 15th on the Federal Procurement Data System's list of the top 100 government contractors in 2013; the company earned $3.47 billion under federal contracts last year. One of the products in Carey's charge could be an offering CSC released earlier this month called AppSEC on Demand, which tests the security of software and helps clients build security into the development process.