Is it a good choice to pursue MCA after completing B.Sc in CS to become a software engineer?

Exactly, it is a correct decision. Regards.

As per my opinion, you can do MCA after B.Sc in computer Science you have interest in MCA, then you can pursue, because nowadays MNC companies required good persons and skill persons, so there are lot of options open for you in MNCs. After doing MCA, so you can pursue for MCA for your best future.