The interview process included:

• A phone screen with a recruiter.
• A one-hour meeting with the hiring manager.
• A take-home programming challenge.
• Four one-hour interviews covering graphics, Unity experience, general programming/technical skills, and culture fit.

It was a long process, but Unity provided a lot of great links and prep material, so I felt like I knew what to expect in each interview.

• Describe a time when you disagreed with someone on your team, and what happened?

• Describe your management style.

• Lots of general C# questions (polymorphism, inheritance, class vs. struct, garbage collection, etc.).

• Tell me about your experience using Unity.

• How can you optimize for mobile in Unity?

• How does a GPU determine a pixel's mip-level? (Plus a follow-up question).