4 levels for senior software engineer, it is good, more involved technical questions and coding rounds, panel was good asking different set of questions, and also have been interviewing different projects took the interview call.

My interview opens with a discussion on technical decisions. Instead of just "What is a class?", the interviewer asks: "Why choose C++ over a managed language like Java or Python for your last project?"I focus my answer on predictable performance and fine-grained memory control. I explain that for our low-latency data processor, the overhead of a Garbage Collector (GC) was unacceptable. This leads naturally into a discussion on RAII (Resource Acquisition Is Initialization). I explain that by tying resource lifespan to object lifetime, C++ allows for deterministic cleanup without the need for manual free() calls or a GC.

4 stages, 2 of them - coding interview, very similar, 3 and 4 - behavioral interview. Also require to enter your data several times (one of them - to a PDF file which has some bugs. Very "serious" approach.