I am currently doing some research as I'm wanting to build a sort of jobs board. Users can add jobs on my site, and then embed the list of jobs onto their site.

From my research, I can tell there are two options for this - iframes and JS widgets. I am trying to figure out if there is any SEO benefit to either solution or any SEO issues. Ideally, I would want a search for 'Software engineer' for example, to rank the site that has the jobs board embedded and not my site. I have heard that iframes can damage the embedder's SEO which is something I want to avoid.

Have you got any advice or alternatives?