IT role in a financial marteting infrastructure company

Just asking if a job is halal. Its an IT job where you fix IT issues within a financial marketing infrastructure (FMI) company. An FMI in general help create the infrastructure that allows all transactions to take place be that between individuals, companies and banks. In particular my FMI company works with other companies and banks and allows their transactions to take place. It involves stocks, gilts, bonds and may potentially allow interest based transactions to take place among others.

My IT role is fixing computer system for my FMI company or any issues with the transactions of the clients caused by IT faults. Would this IT Job be permittable?