Marin Software announced Daina Middleton, head of global business marketing at Twitter and former CEO of Performics, has joined the company's Board of Directors. Middleton is an expert in the digital marketing space with more than 20 years in the industry. She recently joined Twitter as the head of global business marketing where she oversees sales enablement.

Prior to Twitter, Middleton was CEO of Performics, Publicis Groupe's lead search and performance agency. Additionally, she spent two years as a senior vice president at Moxie and over 15 years within Hewlett-Packard's marketing department.