One of the first roles that I've been working on since I went full-time remote was that of the unit tester. I wasn't used to being the QA guy before and although this was new to me, I've gotten the hang of it.
Devs do the feature, someone does some QA, and then the task card is moved to the Unit Testing column.
Most of the untested code that I've seen is controllers, services, and methods with hundreds of lines of code and very high complexity.
I've written tested code and I've written untested code and I can say with full confidence that tests haven't cost me as much time as I anticipated they would.