No HR interview with typical questions, only an interview with four developers. This position was mainly about software design in C++, but there were no questions on software design. The interviewers seemed to be in a hurry. Many questions were unrelated to the position. They expected dictionary definitions as answers.

Time and money wasted for experienced individuals looking for a better-paid job. It took them an extremely long time to make and inform their final decision; you had to ask them for updates from time to time. Rude interviewers. Unprofessional and no reimbursement.

Testing techniques (black-box, white-box, regression, unit testing) – they expect the answer from the book, not from your experience and real-world programming.

Testing strategies (not assertions, mocking, and so on) – answer as it is defined in one of the books they have probably read before.

Implement an algorithm to find the balance point of the array. Proposed one, with average complexity of O(N-1), but it seems they were looking for another solution (which I found on Stack Overflow later).

What's wrong with this code? (They were looking for the "exact answer from the book", not what you can observe in the particular code example).

What is polymorphism? (In-depth question – vtables, vptrs implementation details – with example on whiteboard, marking as virtual in base and not marking as virtual in derived. What would happen?).

What comes along with copy-constructor? (Silly question, the correct answer is the assignment operator).

Plus standard questions on memory leaks, mutex and semaphore, difference between stack and heap, overloading of operator new, etc. No questions on "advanced" C++ features like templates.