In the law firmsDLA Piper added R. Matthew Hiller as a partner in the litigation practice.Hiller previously served as an associate at the firm where he worked on a range of high-profile litigation and investigation matters.He joins from the U.S. Attorney’s Office, where he served as an assistant U.S. attorney in Chicago and Kansas City, Mo. • Sarah K. Baker joined Northbrook-based Hilco Global as vice president …