To get jobs which are directly related to your course, career and experience you can visit the following websites
1. http://www.radarrecruitment.com/
2. http://www.brightermonday.com/
And you can check advertised jobs also on the following website and bloggs
1. http://www.kazi999.blogspot.com/
2. http://www.naombakazi.blogspot.com/
3. http://www.tzonline.org/
4. http://www.kazi112.blogspot.com/