Currently, development teams face many challenges when designing user interfaces. There are more, and more, new methodologies, processes and techniques to make user-centered design. However, these teams often lack specific techniques or methods to accomplish these designs themselves in a real-world development process. The following is a proposal of a user-centered design approach through a case study. The approach was applied to successfully redesign the main menu of an ATM interface of a Peruvian Bank. In this iteration, the convenience of aligning the proposal with proven methodologies such as Design Thinking was observed. This proposal continues to be applied successfully in the development process of the ATM team of said bank.