Is it permissible to work in the maintenance of computers, printers, and software for a bank that deals with usury and also has Islamic investments and banking transactions?

The original work of the company is permissible in Islamic law, being a type of permissible ijarah (definition) (leasing/hiring). However, maintaining computer devices for a usurious bank is not permissible, because the bank uses them for unlawful purposes. Therefore, it is not permissible for you to manage a project for maintaining these devices, and you must refrain from doing so, because there is no obedience to a creature in disobedience to the Creator. As for the rest of the company's permissible activities, there is no objection to them.