No he didn't. King George III did.
He signed the treaty of Paris with Benjamin Franklin
Benjamin Franklin
John Jay, John Adams, and Benjamin Franklin
The Treaty of Paris, which ended the American Revolutionary War, was signed by representatives from the United States and Great Britain. The representatives from the colonies (United States) were Benjamin Franklin, John Adams, and John Jay.
John Adams
There was no Constitution when the Treaty of Paris was signed. Signer John Adams later became the second POTUS.
If you are asking about the Treaty of Paris that ended the revolution it was in Paris, France.
John Adams, John Jay and Benjamin Franklin
Benjamin Franklin and John Jay.
Benjamin Franklin, John Jay, and John Adams
John Adams, Benjamin Franklin, and John Jay all represented U.S. interests and signed the treaty
The three men that signed the treaty was John Adams, Benjamin Franklin, and John Jay.