Marin Software Incorporated announced that Wister Walcott has returned to the company as Executive Vice President, Product and Technology, where he will manage product, technical operations, and engineering. Mr. Walcott co-founded the company with Chris Lien and was a senior executive at the company from 2006-2015. Prior to the company, Mr. Walcott held general management positions at Siebel Systems, building software for employee communication and marketing automation. He also led marketing teams at Composite Software and Pilot Network Services. Mr. Walcott started his career at Oracle, where he was a field engineer and product manager.