Stair and Platform Structural Calculations

I'm in need of a structural engineer with expertise in commercial-grade outdoor aluminum structures. The project involves a staircase and a platform, both intended for outdoor use.

Key Requirements:
- Conducting necessary structural calculations to ensure safety and stability
- Designing for aluminum material
- Considering commercial-grade durability and weather-resistant features

Ideal Skills:
- Proficient in structural engineering and design
- Experienced with aluminum construction
- Familiar with commercial outdoor structures

Please include your relevant past work in your bid. Thank you.