For graduates, job opportunities exists in Government as well as Private sector. Also, self employment options are available. After BCA, which is an Undergraduate course, graduates may take up Government jobs that require a Graduation Degree (for example- Armed Forces, Nationalized Banks, PSUs etc).
When it comes to Private sector, Software MNCs are the prime recruiters. Web hosting, IT sector, Electronics Industry are some other sectors that recruits BCA. graduates. Graduates may take up the following posts in the above mentioned sectors -
Software Engineer
Software Tester
Database Management professional
Project Manager
Information Security professional
Information Management professional
System Administrator
System Security Officer
Software Architect
Associate Software Engineer
Project Manager etc.

Hope this helps!!!