How to fix the sound that comes out after pressing the brake ?

Is the noise coming from the same area as the repairs? Does it sound like metal? We may need more info but here are a couple of things that could be occurring: The brake pad could be installed incorrectly or the break pad hardware kit could be touching on the rotor.

I'm a mechanic , I'm used to metal-on-metal sounds , that's not scary. Sounds that scare me , are things like being on a test drive with a customer with the windows up and a faint sound of escaping gas.......now that scares me!!!