Second Floor Addition for Pole Building

I need a skilled contractor to add a second floor to my pole building. The new space will primarily serve as a workshop or hobby area.

Requirements:
- Design and construct a safe, functional second floor.
- Ensure structural integrity and compliance with building codes.
- Access to quality materials and tools.

Ideal Skills:
- Experience with pole building modifications.
- Strong carpentry and structural engineering background.
- Ability to create custom designs based on my needs.

Please provide a detailed plan and timeline with your bids.