Is it permissible to work remotely for a European company that requires designing websites for banks and insurance companies?

There is no objection in principle to working in the mentioned field, but it is not permissible to work in matters related to commercial insurance companies or usurious banks, based on the words of the Almighty: "And do not cooperate in sin and aggression," and because the Prophet, peace and blessings be upon him, cursed the one who consumes usury, the one who feeds it, its scribe, and its two witnesses. If it is possible to work while avoiding forbidden matters, then there is no objection. Otherwise, it is obligatory to search for a completely permissible job.