Great question! There are currently four strong job boards, with btc- ONLY job postings. There are plenty of others claiming to advertize btc jobs as well, but usually they are full of crypto, and NFT projects so companies in the space don’t really post there. For example:

Ostrich.work

Bitcoinerjobs.com

Option two: slower option but totally worth it, have a list of companies you support and check their websites from time to time. Sometimes, they don’t post on external job boards.

Option 3: look for telegram groups, I know Bitvocation started recently. They use scraper to post all job openings in their channel