Tim Sullivan, who was a leader in the Sage X3 effort, has joined Avalara as director of sales. His LinkedIn page shows that Sullivan joined the Bainbridge Island, Wash.-based sales and use tax vendor in April, but the hiring has not been officially announced. Sullivan was director of Sage ERP X3 from January 2011 through April 2014. Before that, he was an area sales manager for Microsoft from June 2002 through January 2011.