If not, your best bet is to keep track of the job boards for companies that interest you.
Oh, and if you're in the UK my employer is recruiting front end developers for the Open Source Cloud Engineers team: https://capgemini.github.io/frontend/hiring-front-end/
@nydel your best bet for open source job leads though is to tag along to an open source conference:
or join a Linux User Group
I donate to the FSF and Trisquel, but I suspect unless I met people in person it wouldn't lead to job leads.