Commercial Flat Roofing Research & Bidding

I'm in the initial planning stages of a commercial roofing project, specifically focusing on flat roofs. I need to find someone who can help with research of plans and put together bids for the following types of buildings:
- Office buildings
- Retail spaces
- Industrial facilities
- Government contracts

Ideal candidates for this job should have:
- Extensive experience in commercial roofing, particularly with flat roofs.
- Strong research skills to identify suitable plans and materials for different types of commercial buildings.
- Excellent communication skills to put together professional, detailed bids.
- An understanding of the bidding process and pricing structures for commercial roofing projects.