Hi,
Hope you are doing well.
As i can understand from project description, You want to make a marketplace to exchange the currency, it is a kind of currency trading market.
We are a web design and development agency and working from last 7 Years.
We can make this requirements done with in reliable budget and in time limit.
We have some ideas for your application like multi lingual, multiple sub domain based on country and language etc.
We can do the best in this project.
Please initiate chat for further discussion and start work on project.
I am looking forward to working with you.
Regards
Amit Kumar