Is it permissible to perform Hajj while continuing to work in banks, given the inability to leave immediately, and the feeling of guilt regarding this?

We advise you not to pay attention to Satan's discouragement concerning Hajj, for there is no sin in your salary. And your persistence in a sin does not prevent you from performing Hajj, for Hajj was made to expiate sins, and perhaps your Hajj will be a cause for your repentance and guidance.