Same for me, and I currently hunt child traffickers for a living. I have written them detailed cover letters about how predators are exploiting block-chain tech and the dark web and how I see product that could expose these predators. Have not gotten back so much as crickets. I am also a full stack developer (20 years) well versed in the stacks they use.

Wow. That's crazy. I can't imagine what they're thinking. The weird thing is I have gone on Linkedin and looked for who they hired after a role I applied for is closed, and it's usually journeyman programmers who don't have any domain experience. My suspicion is they're hiring from their own networks, and the job listings are just a show.