Short for "developer's block", a state of mind where a software developer is trying to design and develop a piece of software for a certain purpose, but is struggling to write the necessary code. This is essentially a technical version of writer's block and artist's block.
Manager: Hi, how's the source code for next project coming along?
Intern, almost crying: I- I don't know! I'm so sorry, I'm stuck on the 413th line! This is nothing like any of my classes!
Software Engineer: hey hey hey, relax. RELAX. It's just a little bit of dev's block. You'll be fine. Just take a little break and come back to it later.
In an IT software situation, an extremely irrational and highly-motivated developer, who takes charge of a software project through sheer force of will rather than competence and leads it in a direction which guarantees failure.
Background: The Don Quixote of literature had a tendency to do extraordinarily stupid things without thinking them through. But after exhaustingunsuccessful attempts to redirect his ill-fated efforts, people were loathe to try and stop him on account of his being a few cans short of a six pack.
I am officially referring to my development lead as "Dev Quixote" from this point on. He's got the idea in his head that everything under the sun needs to be containerized and run in Kubernetes; we even have docker-in-docker. On top of that, the larger organization has given up and let him carry on after he convinced management of his "bold" ideas.