CornerUp | 1,444 followers on LinkedIn. CornerUp is a B2B e-commerce platform powering sourcing, purchasing, and discovery for independent stores. | CornerUp is a fast growing, venture backed, NYC-based marketplace startup providing corner stores and other small food retailers a one-stop-shop platform for discovering and purchasing inventory for their stores. CornerUp’s mission is to enable these small businesses to compete with today’s large retailers by transforming the way in which they operate through technology and modernization, empowering independent retailers to do their best work and better serve their neighborhood communities. Headquartered in NYC and backed by some of the world’s leading investors, CornerUp is more than a startup — we are a team focused on supporting our community through our small businesses.