After completion of MCA you can apply for various jobs. Reputed IT firms like TCS, INFOSYS, MAHINDRA SATYAM , WIPRO, HCL , CTS are recruiting students in a large number .You can apply for the job in these IT firms.
You can visit FRESHERSWORLD and there in job section u will get the no. of job applications. I will suggest u to submit ur resume in NAUKRI.com for more opportunities.
You can also try in government sector.
All the best.........