Can anyone tell me what type of worm this is?
I can't see the head clearly but based on

1: it is a big worm cruising around on land 
and
2: you have never seen one before

I bet on this



From linked article.


  The flatworm (Platydemus manokwari) has few natural predators outside
  of New Guinea, and it likely will have no predators in the United
  States, Justine says. It gobbles up soil-dwelling invertebrates like
  snails, which could have a big impact on the environment.