 SEATTLE--BUSINESS WIRE--Avalara, Inc. NYSE: AVLR, a leading provider of tax compliance automation software for businesses of all sizes, today announced the appointment of global finance leader Marcela Martin to its board of directors. Martin is chief financial officer of Squarespace, the all-in-one website building platform, where she oversees the companys finance and corporate development functions. Prior to Squarespace, she was chief financial officer at Booking.com, where she led financ 