Blender and Unreal - Rigging a character (body and face)

I am looking for an experienced 3D rigger that knows well the Blender -> Unreal pipeline. My friend and I are trying to rig a character sculpted in Medium to use it in Unreal (Mocap) but we can´t get it right. We are in need of some tutoring/consulting to know what we are doing wrong. The languages we speak are: Portuguese, English and Spanish. Being able to talk on skype is a must.