Design openings at Airbnb?

Does Airbnb ever publicly post Experience Design openings? I swear I have only seen 1-2 posting for the SF office in the last 2 years and I look quite often. Do they rely on references or recruiter finds? An acquaintance who works in finance there says they are always looking for designers, I don’t believe her lol. Where do all these postings hide!? I imagine they get bombarded with applications when they do post..