In 1997, LaKritz became an attorney with the Washington, D.C. law firm of Baker Donelson, working in the firm's International practice, which included former U.S. Secretary of State Lawrence Eagleburger and former White House Chief of Staff and U.S. Senate Majority Leader, Howard H. Baker.
In 2001, he was appointed by President George W. Bush to be Advisor to the Deputy Secretary of the United States Treasury.