Truth be told, the only places to get such a developer are:
1. E-Solutions
2. Econet Wireless
The Java community is relatively small in Zimbabwe, I mean there are less than 30 serious Java enterprise developers in Zimbabwe. If it's a big project, you may want to change to PHP or .NET, they have a much larger community. You can try Escrow Systems, but truth be told, they are newbies, they don't even use Maven, JPA, Spring in their projects.