As for payment and documents, there is also no problem. As it is easy to make it remotely from your client's bank or by contacting the bank in another way. In case of cooperation with foreign companies, it is possible to accept funds in your currency. Documents are transmitted electronically, or, if necessary, sent by courier service around the world;
Therefore, you can always not only place an order, but also monitor its execution completely remotely. You already get the results of your work online, because our field has long moved to this type of transfer of development results.