Microsoft Prague:

There was a first series of interviews with HR, then they held for one month with a reply. The second round was a technical interview where I was requested to write a simple algorithm in Python.

Then there was a series consisting of four interviews:

1. Again, a simple algorithm in Python.
2. Interview with a Data Engineer without specific technical questions on data engineering. Though they asked to propose the design of a LinkedIn news feed specific for each user implementation. That was the only interesting task.
3. Management interview with standard questions - how do you handle stress at work, etc.
4. Interview with a Data Engineer again. Basic SQL knowledge is enough to pass.

Remarkable that during the whole process, neither salary nor a specific role description was provided. And despite me answering all the questions and mentioning that a senior role was the only one I could accept, they didn't come up with an offer and didn't explain why.

My thought is that they couldn't manage to open a Senior position for this job.

Write a function that returns the N-th distinct element from an array.

Example: N=2 Array=[a,a,b,c,d,c,e] Answer = d

because 'a' and 'c' are not distinct in the array and are omitted.