sizing and calculations for the roof beams.

I am looking for an experienced expert to help with sizing and calculations for the roof beams of a pitched roof that will be made of wood, in an area of less than 1000sq ft. The contractor should have expertise in a range of materials, as well as engineering and structural calculations that are essential for determining the best beam size and strength. They must demonstrate advanced knowledge of beam design principles and be able to provide plans and specifications before beginning the project. The necessary tools and materials must be provided by the contractor, as well as a timeline and cost estimate for the job. This job requires accuracy, safety, and efficiency, and the contractor must possess excellent problem solving and communication skills.