Flavored Water Bottle Cartridge Design

I'm looking for a skilled CAD designer to create a product design for a flavored water bottle cartridge. The primary goal is innovative flavor delivery.

Key Requirements:
- Design a cartridge that flavors water as it's consumed
- Use of food-grade PET or PP plastic
- Focus on innovative flavor delivery, while ensuring ease of use and durability

Ideal Skills:
- Expertise in CAD design
- Experience with food-grade plastic materials
- Strong background in product design, particularly in beverage-related products

Please provide samples of previous relevant work.