(Reuters) - Kraft Heinz Co on Monday named Paulo Basilio as chief financial officer, in a strategic move that would put a more "seasoned" executive in place of David Knopf.Under Knopf, who became CFO in 2017 at the age of 29, Kraft wrote down $15.4 billion (£12.5 billion) in value of its brands Kraft and Oscar Mayer. He will return to private equity firm 3G Capital where he has been a partner since 2015.Kraft Heinz, which counts billionaire Warren Buffett as its largest investor, has been..