Doesn't really help right now either, but our company has had great results getting interns via SoT: https://summeroftech.co.nz/

2 out of 3 interns we hired through them the past summer, we've offered them a perm positions at the end of their tenure. The final intern had to leave as he still had 2 years of uni left!

Might be worth getting him/others looking into it as well.

I'll also ask some connections in Auckland and see if they have anything for him.