I’m working on a project that involves payment processing and financial data security, so I need a solid fintech software development solution. There are ready-made platforms, but I’m considering custom development for better flexibility. Has anyone dealt with this? What would you recommend based on your experience?

It is a complex process that depends on security, compliance and scalability. Some companies opt for off-the-shelf solutions, while others prefer custom development to tailor features to their needs. It all depends on what exactly you are building - payment gateways, trading platforms or something else. This link will give you some information about fintech software development. If you need a customized approach, you might find these services useful