High-Torque Modified Screwdriver Prototype

I'm seeking an experienced tool designer or mechanical engineer to help me improve on the design and mechanics of my concept prototype. I'm working on a prototype screwdriver that gives you increased torque that can be used for everyday work as well as construction or electrical work. I have drawings and basic specifications already drawn up and will share them upon request.

Tool Requirements:
- Design a screwdriver that enhances torque
- Robust enough for construction use
- Ergonomic design for user comfort

Ideal Skills and Experience:
- Experience in tool design and prototyping
- Strong mechanical engineering background
- Familiarity with construction tools and their requirements

Please provide examples of similar projects you've completed.