Applied through university recruiting. Had an online skills test. The test was at an independent center. It mostly consisted of basic, made-up questions with constraints. Both time and accuracy mattered. Initially, there were some short questions, then some longer programming questions. Some questions require basic programming skills. The language can be chosen as convenient; you can even write pseudo-code if necessary instead of a complete implementation.

Find all possible numbers from a set of numbers, with some additional constraints such as the number cannot begin with a specific digit, etc.