I have only done the OA part yet. But there are 3 section: OA, Tech Interview, HR Interview. The OA is very simple but there are many solutions. I feels like they focus more on your working process. Unlimited Time.
Otras evaluaciones sobre las entrevistas para el cargo de Systems Engineer en Matic
The first step of the interview was to respond to a C++ challenge that I did not pass. The challenge is supposed to take few hours but that was not the case for me which by the way they are okay with it.