Mechanical engineer for Plastic Enclosure development (IP67)

I am looking for a skilled mechanical engineer to assist me in the development of a plastic enclosure for an electronic device . The desired size of the enclosure is medium, ranging from 10-20 cm. As for the material, there is no specific preference, giving you the freedom to choose the most suitable option. The ideal candidate for this project should have experience in plastic enclosure design and be familiar with IP67 standards for waterproofing. Additionally, knowledge of various plastic materials and their properties is preferred. If you have a strong attention to detail and can deliver high-quality designs within the given size range, I would love to discuss this project further with you.