Ref. No. 2318/44-3494
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
If you have a fair job or business, then a bank job involving any kind of usury is not allowed for you. It is clearly mentioned in the Hadith that involvement in usurious business transactions is not permissible, and the writers of interest based transactions, and the witnesses, are equal partners in the sin.
لعن رسول اللہ صلی اللہ علیہ وسلم اکل الربا وموکلہ وشاھدیہ وکاتبہ" (سنن الترمذی: 239/1)
And Allah knows best
Darul Uloom Waqf Deoband