Flight briefers have to stay on top of a lot of different variables. In order to give a pilot the information they need for their flight they must be able to interpret weather forecasts, keep on top of any ATC delays, and wade through all the NOTAM's to find the ones relevant to the flight plan.
The skill set overlaps with those of flight dispatchers. In the US flight dispatchers are required to have a certificate. Are flight briefers required to have a license or certification, either a dispatcher certificate or some other credentials?