Irvine, Calif. — Wienerschnitzel, the world’s largest hot dog franchise, has promoted longtime company executive Rusty Bills to chief operating officer, effective immediately. Bills brings 15 years of experience with Galardi Group Inc. to the COO position, which was last held by now-President and CEO J.R. Galardi, who was elevated to his current role in February. Bills’ previous roles have included his start with the company as franchise business consultant, director of operations and vice president of operations. As COO, Bills will spearhead cost savings, store-level technology advancements and streamline …