Hi,
There's always a bundle of telecoms jobs out there. Check out the NZ Telecom website
www.telecom.co.nz - somewhere on there is a list of all of telecoms vacancies across the whole country.
If you came over with a work permit, you would be entitled to a partner's work permit also, and the children would get student visas. If you wanted to attend uni, you would either have to apply for a work permit with special variations to study, or a student permit.