Honestly, I think this is somewhat of a crapshoot/hard to tell from the job description and the reason I say this is the job I'm currently in functions exactly how you describe but the job description/everything else from the outside gave me no clue before I actually started the job.
"Ideally being done in 2 hours in the morning then chilling would be perfect" -- in fact, for me, often it's 2 hours on a Monday morning the first day of the sprint, then just being present on Slack for the rest of the two week sprint. I wait and submit PRs etc at the end of the sprint.
My previous jobs in tech absolutely did not function like this, so I was somewhat surprised when I fell into my current position/groove. My coworkers/managers seem to think the amount of work I get done every sprint is actually above average, even though it rarely takes me more time than six hours max every two weeks. I mostly work on backend stuff (85%/15%) and am in a senior position at a relatively large (non Silicon-Valley though still very tech savvy) company with tens of thousands of employees and billions in revenue, though based on the East Coast. My salary isn't bonkers but I'm comfortably in the 150-200k range before bonus.
There was no way for me to know, going into the job, based on the job description, interviews with team members, etc, that the expectations of my managers and co-workers would be so low. And honestly, I'm still confused. I'm not a genius software engineer, I'm maybe above average but still not anything special. My coworkers aren't lazy or bad either - they're all sharp, proactive people. All of this is to say, what you're looking for does exist, it's my job, but I haven't the slightest idea how I would've been able to tell this is that type of job before actually doing it, so alas I can't help you very much, though I am willing to answer questions if you may have any.