I started on Elance and found some awesome clients there. One even told me to double my bid because "they weren't cheap"!
The key is to focus on a niche and find clients that value their own time.
Also I was living in a 1st world country and able to support myself from Elance projects, so it would be much easier for someone in the Congo.
It is very hard. Development community are quasi-non-existent. I tried to build one but did not succeed. Getting contact with responsible of enterprises will not be easy but I will try and they are not many.
There is likely a development community and opportunity there, but it is not obvious.