Hi Wantka,
Welcome to the forum.
I was hoping one of our Tauranga-ites might be able to answer this, but guess they either don't know the answer if they're not in that line themselves or they haven't been back to the forum since you posted. From the little I know, I'd say there would be a better chance of getting an IT job in Auckland or Wellington rather than Tauranga. That's not to say they don't exist, but I think you'd have to dig around to find what you're looking for.
There's a list of job agents on the
Master Website List under Employment which might give you some idea of where the jobs are most likely to be.