How to draw up contracts with developers in the company?

Question

Law in IT

Good afternoon!
How to properly draw up contracts with developers if the company is engaged in design work like a web studio?
Those. made a project, handed over, done, handed over - it is impossible to fix in the contract what kind of software the programmer will develop. Do not sign a new contract each time, which will confirm that this software is an official work and is the property of the company.
In case of claims, how can I prove that this software was developed for the company and was paid for and is the property of the company?

Answer 1

Do not sign a new contract each time, which will confirm that this software is an official work and is the property of the company.
to sign