Even if that "on call" was only 9-5, getting distracted and losing half a day to tracking down the latest flaky test or owner for a failing dependency really adds up and makes it significantly more difficult to do my day job. When I'm oncall, I'm oncall 24/7 for a week (30 minute SLO) and the expectation is that the amount of non-oncall tasks I'm able to get done that week is significantly impacted. I'm fortunate to work on a team that acknowledges that reality; I know many people, even at large software companies who should know better, whose management is far less reasonable.
I joined a US company as part of a follow the sun model. Although ironically I seem to support people who are up at midnight in Europe more than in my area of the world.
Happy to have a chat, see if I can offer any useful feedback :)
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