SAN FRANCISCO–(BUSINESS WIRE)–U.S. fintech company Brex, the all-in-one finance solution for growing businesses, today announced Karen Tillman has been appointed Chief Communications Officer, a newly created role. Brex was created as a credit card serving VC-backed companies, and has expanded its portfolio of services to include business cash accounts, spend management and reimbursements, all delivered on a single platform. Tillman will build upon this expansion by leading communications prog