During his time in Impact JB has worked in every part of the company including writing, an agent, producer, social media, and an announcer. At one point JB had his own YouTube series on the Impact Wrestling channel and really was one of the focal points of Impact's social media presence and a major member of the backstage team. Though there are some mixed reports of his place on the writing team, but I do know that Jarrett & JB were friends and that points to his place on the team. JB was also one of the many writers that had a part in the Broken Universe during Matt's time in TNA along with Matt Conway and Billy Corgan.
Now even though there is very little known about his position within the WWE it is clear that JB can do pretty much anything that is needed. In my opinion I think that the move of bringing JB abroad could be connected to Triple H getting more control within the company and though I am unsure where he will best fit I do think he will be down in NXT in some form at least to start. Either way it is kinda crazy to think that Jeremy not only is out of Impact but is also on the other side of things.