Solar Bidding App Development

I'm looking for an experienced developer to create a web-based solar bidding application. The app should include:

Bidding Feature:
- Bid creation and submission
- Bid tracking
- Bid notifications

Inventory Management:
- Stock level tracking
- Inventory categorization
- Supplier management

Ideal skills and experience:
- Proficiency in web app development
- Experience with bidding systems
- Strong inventory management integration
- Familiarity with solar industry is a plus

Please provide sample work and estimated delivery time.