Do I need to fill out NJ Reg and a trade name for a sole proprietor SaaS?

I’ve written the code and have the infrastructure to deploy my SaaS application and in my mind it’s like freelancing. You work on a project and you get paid. But for a SaaS or for selling like software that comes with a license key, do I need to file anything in NJ if it’s not something big and I want to remain a sole proprietor for now and leave my name off the site?