Since you have five years of banking experience and is interested to have an assignment in the foreign financial institutions/ banks while living in the abroad. While working as an employee of PSB, you should take all measures to be conversant with all the operations of the banks and should be conversant with the Banking and Insurance Law, Financial Risks, Measures to avoid bad loans etc. Once you feel comfortable with all sorts of such operations, look out the branches of your bank in the foreign preferably in USA because of prevalence of peaceful environment. If your bank does not have any branch in USA, you may try a job in other bank in India having its branches in USA as well.
You have to show your outstanding performance in your job and apprise of your interest of your transfer in USA. Based upon your work and consistent performance, they would provide you opportunity for going abroad.
The other way would be to acquire some short term diploma which could be helpful to you to have a job in USA with some job consultants. The following diploma courses could be helpful-
1) Certified Financial Planner Certificate course.
2) Business Analytics Certificate Programme.
3) Certificate of Risk Management and Insurance
4) Certificate of Financial Accounting and Taxation etc.