NEW YORK--Sumitra Mattai has been named Senior Design Director for Scalamandre Design Studio. She will be in charge of Scalamandre product development. She replaces Susan North who left Scalamandre to join Jim Thompson, The Thai Silk Company Limited as Senior Design Director.   North had been at Scalamandre since July, 2014. Mattai comes to Scalamandre from Lori Weitzner Design, Inc., with over a decade of experience in the luxury home furnishings industry, according to Suzanne  Alfieri, Vice President, Operations at Scalamandre. Mattai was in attendance at  Heimtextil in Frankfurt, Germany this week with Louis Renzo, Principal of Scalamandre; Chad Stark, President of Scalamandre; Peyton North, design manager and Lorraine Lang, Design Director of Old World Weavers. Mattai will begin working in the Scalamandre design studio immediately following Heimtextil. + + + In other design developments, Alexis Audette previously with RAD/Beacon Hill left for a position at Schumacher. Her replacement will be tasked to Stephen Levine, Creative Director of RAD.