Situation making me confused

Dear All,

I am interested to work in Investment banking sector especially in Investment management or financial advisory field. I have three years of experience in the same field with Thomson Reuters. I am feeling difficult to find a job in that sector and the situation forcing me to work in different sector. I know that it would create a deviation in my professional career if I choose a different sector. But as you know I don't have more time to stay in Qatar to search for a suitable Job as I am currently in Visit Visa.

I am expecting a valuable advice from your side and also let me know how I can apply for the job in invesment banking sector.

Note: I went through all banks website, have updated my profile and also sent email to their career section but still not recieved any reply.

Regards
Sameer