Try them all! They take different approaches, and one might suit you better than another.

django CMS has addon applications for both jobs (Aldryn Jobs) and weblogs (Aldryn News & Blog).

If you're interested, you can join a free Guided Tour each week that will actually cover some how this all works in django CMS: https://www.divio.com/en/academy/aldryn-cloud-django-cms-gui...

For a fully-blown jobs site by the way you'd probably want to expand the Jobs application but it's open source software already so could be a good start.