Although [Beginner] is pretty different from [Expert] no matter what, the expectation of a beginner or expert may vary widely from person to person.
If you got any pushback at that point you could ask them why they tasked the beginner with this project, when you clearly claimed you were not an expert.
The other levels can be played similarly. An intermediate person could be assigned to some project and be expected to perform mostly independently, but if there were any non-idiomatic code or poor optimizations, they could just shrug it off as a learning opportunity. "I'm no expert" you can say.
Although the difference between levels may vary from person to person - your projects section should also reflect your listed skills.