Costar Group Backend Engineer interview experience

The technical portion included C#, basics of object-oriented programming, and basics in .NET, with at least one coding question.

The process started with a phone screen and then moved into a technical/behavior portion. It wasn’t framed as trick questions so much as making sure I knew the core concepts well enough to discuss and apply them. I also got the sense that the coding part wasn’t about fancy algorithms—it was more about making sure I could write and reason clearly with the fundamentals.

Overall the interview felt average difficulty, and I felt like preparation for the basic building