Wall retired in early 2020 as chief technology officer of HP Inc., but continues as a special advisor to the CEO. Previously, he was chief technology officer and SVP of printing and personal systems at Hewlett-Packard Co. Following Hewlett-Packard's separation into HP Inc. and Hewlett-Packard Enterprise, he became CTO and global head of HP Labs of HP Inc. He is a member of the U.S. President's Counsel of Advisors on Science and Technology.