After having done a rotation in the dev ops world, I find their lack of design and architecture really disturbing. Services are implemented without edge cases considered. Their tools are some hacked together monster using flavor of the month and some old tech stacks. Unit and system tests aren't written, or if they are, they don't test any edge cases whatsoever. It's hard to test anything locally and most testing is done in test or even prod (Seriously). Documentation is almost non-existent and the implementations of services such as Chef don't follow chef documentation or best practices. Logging is usually non-descriptive and applications written by the ops teams will fail with cryptic errors which they know by heart but make no sense.

"Oh that nil pointer exception on line 53? Yeah that means you don't have IAM permissions".

In short, the ops world lacks what most software engineers would consider basic engineering practices. It really feels like that entire world is just a hackathon project. I know there are some very talented engineers on ops teams. It's just the impression I got from 6ish month rotation.

Rant over, this just touched a nerve.