First round was HR which consisted of basic HR questions. The female interviewing me told me that I will have a technical interview next week. The technical consists of four sections: Basic Math, C/C++, Matlab and Signal processing/ Controls. I had opted for signal processing track for the second round. Math had preety simple questions based on integration, differentiation, linear differential equations, etc. C/C++ section had questions like recursive functions, call by reference, call by value, local and global variables, etc. Matlab section had questions like difference between script and function, basic matlab operations like difference between A*B and A.*B, etc. Signal processing section had questions based on Laplace Transforms, Fourier Transforms, BIBO stability, LTI systems, Causality, etc. Finally, I would just say that all the questions were from the pool on Glassdoor. So, if you have reviewed all the concepts mentioned in the previous threads, you should not worry.