Smart Dog Collar Mechanical Design (STL file ready for 3D printing)

I am looking for an experienced mechanical product designer for a premium smart dog collar locking mechanism

This is not a simple buckle project
The most important part is a strong internal locking system inside the female part

Requirements
Spring loaded pin in the male part
Automatic locking with a strong click when fully inserted
Cannot open by pulling
Release only with one button
When pressing the button the internal lock releases and the pin retracts at the same time

Magnets are also very important
The design must include dedicated space for magnets on both male and female sides
The magnets should help automatically align and guide the connection smoothly before locking

The goal is a premium luxury product with smooth interaction strong locking and clean modern design

Need
3D CAD design
STL files ready for high quality 3D printing
Internal mechanism and outer housing

Looking for someone with real experience in mechanical locking systems compact mechanisms and premium consumer products

Please send similar work timeline and price estimate