There isn't currently a way to save jobs. The ability to save a job I'm interested in so that I can come back later is crucial in job platforms. Users aren't always ready to apply when they're browsing and often times come at a different time to do it.
Searching for a job posting in a platform that has dozens or hundreds of postings when I had already known which one I liked is time consuming and not ideal for the user experience.
AngelList does this beautifully on their UI both on the affordance to save a job and on the clear button filter to look for saved jobs.