Ah, yes, the same old story that HR (or hiring manager) took the job description waaaay too literal, and missing the idea that a halfway decent technologist or developer can/should be able to reasonably pick up any other similar tech/stack...and as such, misseed out on a potentially good candidate. I swear that HR more than any other time in my life behaves more like robots looking to check boxes (or not checking boxes such as in your example). Or, maybe i'm just bitter because i got passed up for nice, interesting jobs in the past, where the candidates they ended up with were less qualified or left the org too soon (re-triggering the same job search again too soon)...plus, i would have stayed a lot longer, and given said orgs lots more of my passion, etc. But, no, i'm not bitter. Not bitter at all. ;-)