AngelList works almost as you'd expect from a dating app. You can click "Interested" in a position or company. If the company does the same with you, an introduction email will be sent to both parties. This helps save time applying for jobs as you know who's interested.
Currently there are a couple hundred remote jobs listed (in total, not specific to fullstack). While that is still a good number to look through, it's nothing compared to many of the remote-specific job boards.
Some job boards will allow a position to be tagged with "remote" if the job only includes some work from home days. Stack Overflow requires that candidates be allowed to work entirely remote for the remote tag to be added.