Is working in financial leasing companies permissible or forbidden? And does it differ from working in banks?

There is no objection to working for companies that adhere to Sharia-compliant financial regulations in their transactions, especially in "Ijarah Muntahia Bil Tamleek" (lease ending in ownership) or financial leasing, provided that the following conditions are met: the existence of two separate contracts (lease then sale or a promise to own), that the lease is actual, that the leased asset is guaranteed by the owner and not the lessee, that Islamic cooperative insurance is in place, that the rulings of lease followed by sale are applied, and that non-operational maintenance expenses are borne by the lessor. If the company does not adhere to these regulations, then it is not permissible to work for it.