It seems like OP and their CTO would like to have reliable 24/7 operations but do not have the skill to do it by designing systems that won't fail catastrophically out of hours or the budget to do it by hiring dedicated staff to be available at all times to fix problems. So instead they are trying to abuse their existing staff.
The correct response to this IMHO is for the existing staff to collectively tell management where to go. In life you can't always get what you want if you don't have the money or make the effort it requires.
The correct response to this IMHO is for the existing staff to collectively tell management where to go. In life you can't always get what you want if you don't have the money or make the effort it requires.