If you are banker & will like to join any software company which make
products for banking industry. Than buy the reference guide on
banking technology industry. It has contact details of nearly 75
banking software companies as well as product details of 20 major
players in the market.

You can start with these 20 IT companies, which are big companies
with regular requirement of banking domain experts. You can also
visit websites of other companies & find their area of expertise. If
any company is having products from your area of specialisation, they
will be happy to hire you. As these products need to be updated
regularly, with changes in regulatory & market environment

For the details click: http://banknetindia.com/books/directory.htm