FIS Software Engineer interview experience

I went through a technical sequence that covered core Java topics, especially around Spring Boot and how you model data and behavior. The questions touched bean scopes and how object lifetime changes with scope types—for example, how creating related objects in different scopes affects what you end up seeing when you retrieve them.

Beyond that, I was asked classic language questions: custom exceptions and whether they should be checked or unchecked, plus stream problems and overriding/polymorphism rules. The interview also drilled into collection behavior—ordering and what happens when