Humanitarian service for an engineer?

<p>Almost done with my BS degree in the USA.. I'm wondering if any engineers here have made a career out of doing relief or development work in the developing world, eg shelter, water, sanitation etc. I know about Engineers w/o Borders, but I'm looking for A JOB/CAREER. I'm OK with working abroad on a meager wage as long as my work is worthwhile. I know Oxfam, World Food Bank, Red Cross etc. have engineering jobs but I'm not sure how easy it is to get them.</p>

<p>Thanks!</p>