What are the visa requirements for New Zealand?

There is an amazing job which is perfect for me, I have tons of experience in the field and will have a masters in just over 2 months in the required subject. The only problem is that the job is in New Zealand and is a permanent position. I have looked on the NZ immigration website and am thoroughly confused by what type of work permit I would need to apply for. Is anyone able to help me with the different types of visa available and what may be best for me? I would love to be able to stay permanently however I have contacted the company hiring to see if they would accept a temporary position if I am unable to stay for longer.
Would I be able to apply for a permanent visa being as I have no ties to NZ previously and also what is the longest temporary visa I would be able to apply for?
(the job is as an egg and yolk sac larvae technician for the aquaculture of fin fish and I have an MRes in sustainable aquaculture and fisheries with my project focus on the rearing of salmonids)