Flat Roof Truss Engineering

I'm seeking an experienced structural engineer to design a 50-foot flat roof truss for a commercial building. The truss will support R-panel/U-panel/AP-panel roofing and must account for snow load requirements.

Key Requirements:
- Design for snow load
- Compatibility with specified roofing materials
- Structural integrity and safety

Ideal Skills and Experience:
- Structural engineering expertise
- Experience with commercial building projects
- Knowledge of snow load calculations and truss design

Please provide relevant work samples and qualifications.