Porirua, New Zealand

I am currently working on a school assessment that includes the following three questions. I would really appreciate it if someone could help me by providing responses to these questions, as the assessment is due in five days and I need to ensure I meet the requirements to pass.

There are a lot of job opportunities with a Master's degree in computer science. However, most jobs on job hunting websites seem to be rather boring (not only to me, but to my peers as well). How do I find either a really mentally challenging job or a kind of job that benefits the world somehow...