I'm currently in India working with an NGO building software for surveying, rebuilding their website, and trying to work with a group at IIT who are building an

I'm currently in India working with an NGO building software for surveying, rebuilding their website, and trying to work with a group at IIT who are building an open source GIS software. There are plenty of NGOs who could use your skills. Governments are coming to expect computer work, GIS maps, survey data etc. This puts NGOs who are behind the times at a real disadvantage for getting funding and getting on with their projects. There are plenty of things you could do outside your field aswell. Some research and finding some people in the know is all it would take. Have a look at Engineers without borders.