Ion Group Software Engineer interview experience

Because my native language was Java, the questions stayed tied to OOP concepts and how they show up in code. I was asked about the difference between runtime and compile-time polymorphism, and the discussion pushed me to be specific rather than just high-level.

After that, the DSA questions turned into a more systems-flavored prompt. I was asked how to implement undo and redo functionality similar to what’s found in MS Word, including which data structures would fit the problem. That combination—OOP conceptual clarity followed by a DSA implementation tied to a familiar product behavior—was