First, they conduct a phone interview which basically revolves around some basic HR question like why mathworks, describe a situation of conflict with your colleagues, gpa, etc. Second round consisted of a technical phone interview. There were 4 sections - 1) Controls/Signal Processing - transient time, rise time, calculation of poles and zeroes, PID, etc 2)Basic Mathematics - AP,GP, relative velocity, linear algebra 3)Programming concepts - pointers, void pointers, inheritance, polymorphism 5)MATLAB - transpose, inverse, etc.