I am not very experienced in terms of anxiety although i've lived with it for years! - I've only very recently come to terms that I have this problem and sought out help and began on medication.
So from my inexperienced point of view I would say that it's quite possible and highly likely your job with it's high level of stress, is the catalyst for the return of your symptoms. If your not aware of any other medical issues you may have or you may need a once over with your Doc then it's your most common denominator for cause.
I wish you all the best with this. Do you think after a time of being in your new job you will get used to it and the anxiety will alleviate. For me I also suffer from being the newby syndrome and it brings my anxiety to the forefront. Will this get better for you with time or is it the stress of the job do you think which causes the symptoms??
I hope this helps a little bit anyway and good luck with it.