One key thing Citibank often asks about during interviews, especially for technical roles, is how you've applied your problem-solving skills in real-world scenarios. This might involve discussing past projects where you've used technologies like Java, SQL, or Spring Framework to solve complex issues, improve systems, or streamline processes. They want to know not only what technologies you know, but also how you’ve effectively used them to deliver results, often tying back to real business problems or improving customer experiences.