For more than two decades, Yello has reliably supplied around 900,000 people in Germany with gas and electricity. From the very beginning, the energy provider from Cologne relied on a web-based service. Yello's mission: to make energy consumption transparent and simple for their customers.
Facing pressure from new competitors and a rapidly changing digital environment, Yello continually strives to provide top-level customer experience. The company turned to DUMBO to help it transition its leadership into the app-first era. And we gladly took on the challenge.