Flat Roof Wooden Patio Cover

I need engineering for a 20x30 flat roof patio cover using wood. The structure should be attached to an existing building. Plans are already drawn. David Ward 916 599-5259

Requirements:
- Flat roof design
- Wooden material
- Attached to an existing structure

Ideal skills and experience:
- Experience with wooden structures
- Knowledge of flat roof construction
- Ability to securely attach to existing buildings
- Relevant permits and safety compliance

Please provide portfolio and estimated time of completion.