How to protect the source code of your project from theft?

Question

Work organization

Let's say there is a project to the development of which I want to connect a developer.
What tricks are there to make it harder for a developer to copy a project for themselves and use it to their advantage?

Answer 1

1. Separate repositories. Give access to only that part of the project that is minimally necessary for the developer.
2. Do not give access to the server
3. Do not give full deployment instructions
4. Do not give the entire database
5. NDA
In general, in real life, it is extremely rare for someone to need other people's sources. And this is all unnecessary trouble and complication for everyone.

Answer 2

Split into independent components.

Answer 3

Open an LLC, hire a person according to the TC, sign an additional agreement with him on non-disclosure of commercial secrets.
Give him a workplace and a computer without Internet access and the inability to connect flash drives, disks, etc.
PS SARKASM

Answer 4

The question is put indecently simply, the answer will be:
Build your projects in tools that allow you to maintain corporate projects.
It is impossible to answer without presenting the specifics of what is being developed and the final goals.

Answer 5

Cut off his little finger