He said he was drawn to New Zealand by its "great qualities".
"We were kind of watching how things were progressing in America and New Zealand just has a lot of great qualities, and eventually we found New Zealand would be a better fit for us and our values."
He will be teaching in the science, technology, engineering and maths subjects.
"I guess as my career's progressed I've had a strong desire to do something more meaningful and have a lasting impact. I thought 'Let me take a shot at helping to create successful young adults'," Fuller said.
"I won't have any ambitious goals to change the system at all, I'm just hoping to impact individual students [and] inspire them to do their best, become life-long learners and potentially follow a similar path [to me]."
As for giving up his lucrative salary, Fuller said he "had to get to a place in life where I could afford to do this".