Really not enough information to give you much advice. You’ll want to watch the videos on basic CMS capabilities in order to understand the basic pieces that you’re building your site with.
If this is Webflow-hosted, you it’s designed for only one CMS per site, so in a standard setup domain.com gets one CMS only. However that does not restrict you from having both job listings and a blog in that CMS.
Google “webflow cms” and watch the getting started tutorials, they’ll give you a much better idea of if/how you can accomplish your goals here.