Cabin Loft Extension

I need a structural engineer to design and approve an extension to my cabin shell. The primary purpose of this project is to create an additional room where the loft is.
I want to raise the front wall on the right side of the 3 small windows to 6 feet and the back wall to 4ft giving it a shed roof instead of the gable roof.

I’ve attached photos below of the cabin the current framing is 2x4 16 o.c.
Walls are 8ft high the current gable roof has a rise of 3 feet and a run of 5 feet 3:12 pitch.


I’m a carpenter by trade im looking to see if what I’m trying to accomplish is do-able and im looking for a design /blueprints

I would like The space under the new loft to be open so I can have a deck that wraps around. I would like to use 6x6 post to hold the corners of the new loft and 6x12 western red cedar beams

Key requirements include:
- Structural integrity and safety
- Matching the cabin's aesthetic
- Efficient use of space

Ideal skills and experience:
- Carpentry and construction expertise
- Experience with residential extensions
- Ability to work with various materials and designs

Please provide a portfolio and relevant experience.