Hidden Magnet Design for Dog Scent Work

I'm seeking a skilled designer to create a hidden magnet mechanism for a specialized dog scent work tool.

Key Requirements:
- Dimensions: 42mm H (opener tab extends about 3.18mm higher) x 27mm W x 12mm D
- Tray: 25.4mm W x 12.7mm D
- Two magnets:
- One to hold the lid closed (Diameter: 15.2mm, 3mm deep)
- Hidden in the base (Dimensions: 20mm W x 10mm L x 5mm D)
- Material Preferences:
- Magnets: Neodymium
- Tab Opener: Plastic
- Finish for Tab Opener: Textured
- STL file to be tested prior to payment for magnet fit.

Ideal Skills & Experience:
- Experience with magnet integration
- Proficiency in plastic design
- Knowledge of various finishes and textures