I live in Wellington and it’s a good mix of riding vs job opportunities. That said if you can score a job in Queenstown go for it. I was there over Christmas for 3 weeks (family has a bach there) and I saw two signs looking for engineers so worth a look? Try seek.co.nz and trademe.co.nz for job hunting.
Back to Welly, there’s heaps of riding literally from your front door. This is my commute:
[video]https://www.youtube.com/watch?v=eQmE-ZSrsTM[/video]
It’s a 5-6 hour drive to Rotovegas for a long weekend of shuttles/gondy action and internal flights are reasonably cheap if you book in advance to Queenstown.
As someone mentioned above Nelson is another great spot, much better climate than here, a great craft brewery scence and epic riding! If only they’ve built Wellington on that side of the cook strait!