Not sure how widely-known this is, but a lot of US tech job postings are straight up fake. US immigration law requires employers to conduct a "labor market test" when helping a foreign worker (H-1B or otherwise) start to apply for a green card (PERM process). I immigrated from Canada so this was done for me too. A real-looking job posting has to be circulated but it's really a scheme concocted by lawyers to be able to say the immigrant is the only qualified candidate. #hiring #tech