Is it permissible to work in an Islamic bank that deals with a usurious bank, knowing that part of the tasks involves developing software for recording usurious interests, and does the ruling on aiding in usury apply to this job?

Islamic banks' dealings with the Central Bank are necessary due to its licensing and oversight. However, depositing funds with it for interest is impermissible except in cases of extreme necessity. In such a case, the Islamic bank must dispose of the interest by distributing it to the poor, the needy, and for public welfare. It is not permissible for the bank to benefit from it in any way. Furthermore, the Islamic bank must strive to convince the Central Bank to invest these funds through legitimate Mudarabah (profit-sharing) contracts.