first they have kept written test including aptitude and to develop 16 bit microprocessor and technical questions on c plus plus and c programs on largest no and second largest number. that's it

After clearing the interview there was no call from Hiring manager, they kept postponing the discussion and I finally let go of it. Joined a better company. There were 2 virtual rounds, first round was purely programming in C, it was easy though. Second round was bit of domain and programming. They mainly tested the domain knowledge.