Residential Gable Roof Installation

I'm looking for an architect to determine sizing for the structure of a
gable roof on a residential building addition. The roof will need to be covered with asphalt shingles.

Ideal skills and experience:
- Extensive experience with residential roofing
- Proficient in Gable roof design and installation
- Expertise in working with asphalt shingles
- Excellent understanding of building codes and safety regulations
- Strong attention to detail and commitment to quality