Roof truss structural design

I am looking for an experienced structural engineer that can verify the existing wooden roof truss structure, and later modify/reinforce it. I have the existing design modeled in Sketchup. The requirements for calculations should meet the eurocode5. Deliverables will be in a few steps: first calculations of how much the structure today can resist under load. Second propose a few improvements designs. Third provide a design for creating 3 dormers(in the attic ) to be used as bed rooms.