Should I pursue CCNA after completing BE?

Yes, you can do CCNA course after completing BE. If you are thinking to join training institutes so Koenig Solutions is the best place. They are offering online and classroom training along with the complete guidelines.

You should pursue CCNA only if you wish to make your career in the networking field, otherwise if you wish to go for software development and testing, CCNA won't help you much. CCNA alone after BE won't guarantee a good job, you need to have strong technical knowledge as well.