Amish is a religious sect tied up with an ethnicity. The religion is a deeply integrated part of amishness and amish people wound never consider a non-christian to be amish.
I've not suggested one could be Amish without being Christian. I've started that 63% of the US population are already some type of Christian and that some of that number are as adherent as Amish; therefore, that many people would not have to convert to Christianity if they were to attempt to integrate with an Amish community.
> Devout Christians in tech are extremely rare in my experience. HN is a tech news site. Have you experienced otherwise?
What counts as "devout"? But I can think of a number of well-known Christians in tech, who by all accounts are serious about their faith. Larry Wall (inventor of Perl) is an active member of the Nazarene Church. Donald Knuth is a Lutheran, who has even published a couple of books on the Bible, and plays the organ at his church. Fred Brooks, who managed the IBM S/360 and OS/360 projects, and wrote the famous book The Mythical Man Month, was an evangelical Christian. D. Richard Hipp, inventor of sqlite.
Yukihiro Matsumoto (inventor of Ruby) is a Mormon, and apparently has even served as a low-level official in the LDS Church (counsellor in the bishopric of his ward). Also a lot of Mormons in the Utah tech scene, which produced a number of well-known companies, including WordPerfect, Novell and Qualtrics, all of whom had LDS founders/CEOs/etc. (I know some people claim "LDS aren't Christians"–I think sociologically they clearly are, and as to whether or not they are theologically, there's no point debating it here.)
In my personal experience, you often don't know what your colleagues believe religiously, because the culture encourages people who believe to be quiet about it. I have no doubt religious belief (and especially serious religious belief) is less common in tech than in the general population–there is likely a partially neurobiological explanation for that–but you've quite possibly worked with some religious believers without realising that's what they were.
HN is popular with many people adjacent to or interested in, but not practitioners of, tech disciplines. This aside, yes, I know and have known many devout Christians who work in tech. Fewer perhaps than in the general population, but still a good number.
What led you to believe this is the true desire of a total stranger on the internet?