EMV certification is a compex process consisting of several conceptual phases, such as selection of acquirers to partner with, compiling a list of devices you need to support, selection of EMV toolkit(s) to certify your solution for required card and payment types in the target geographies (for example, VISA contactless in Europe), development of terminal application and others.
Here is an article describing the process of EMV certification in a nutshell.
More detailed descriptions of particular aspects related to certification of EMV solutions can be found in other articles in our EMV&Contactless series.
Finally, if you need consultations regarding your particular case, you are welcome to address our specialists at UniPay Gateway.