Structural Collapse Inspection for Restaurant

I'm seeking an experienced structural engineer inspector to evaluate a 4351 sq ft restaurant built in 1983. The building features wood roof joists and has areas where ceiling tiles can be lifted to expose structural elements.

Key focus areas for inspection include:
- Roof Joists
- Foundation
- Load-Bearing Walls
- Plumbing

There are existing concerns like:
- Water damage
- Wood rot
- Raw sewage spilling out onto an exit drive

Ideal skills and experience:
- Structural engineering background
- Experience with commercial buildings
- Familiarity with plumbing issues and water damage impacts
- Certification in building inspection

Please provide a detailed report on the structural integrity and any necessary repairs.