After completing Bachelors in Computer Application you can find job in various areas like programming, networking, system administration etc. you can also apply for job in ONGC, Bharat Petroleum or BSNL, MTNL etc. Following are some tops companies where you can apply:

HCL Technologies
TCS
CMC Ltd.
Wipro Ltd.
ORacle
Larsen and toubro infotech
PCS
Mahindra satyam
IBM
UST Global
Iflex solutions.

Government sector jobs:
BANK JOBS.
RAILWAY JOBS.
INDIAN OIL CORPORATION LIMITED - IOCL.
OIL INDIAN LIMITED - OIL.
NATIONAL THERMAL POWER PLANT - NTPC.