Nick,
As JJ says: Africa is a tough place, however, I haven't personally seen anywhere that would hire a newly minted PPL. Believe it or not, everywhere I've been wants to see some sort of certificate (higher than a PPL) and then the guys you end up flying with want to see the proficiency and skill that go with that certificate.
Not to say there isn't a place out there that would hire you, but in my experience, if you did get hired most probably you'd get yourself in over your head.
Sorry I can't be more optimistic for you...Good Luck...