Node is flagged, flag has node reference field, how to show list of referenced nodes to author
I would have an entity reference field for the user where their CV node is referenced. (Using rules on node creation). Helps in many ways.

In views, the contextual filter would be getting those CV nodes using the entity reference filter.

Then in the relationships, you would pick the appropriate flag and it should display the relevant job postings.

I'll test this tomorrow as its very similar to something i did before. I might be off on the contextual filter but i think you should definitely use entity reference from the beginning.

Edit: I'm actually quite certain you should be able to do this without entity reference or rules. Filter the view using Job content type. Then two relationships, one for node authored and flag.