Question Summary:
I want to know that job in Islamic Banks in Pakistan is Halal or Haram?

Question Detail:

I want to know that job in Islamic Banks in Pakistan is Halal or Haram?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
If that Islamic Bank has a Shariah Board and you have confidence in the Ulama of the Shariah Board, you should refer to them for clarity on that issue.
And Allah Ta’āla Knows Best                                       
Mufti Ismail Desai,
Darul Iftaa
Durban, South Africa
Checked and Approved by,
Mufti Ebrahim Desai.