It's absolutely acceptable to have your website go down for some reason overnight. Fix it in the morning.
Even if your app is critical infrastructure (it isn't, and 99% of you shaking your head and saying it is are objectively incorrect), you don't need a software engineer to fix it. You need an SRE. That's completely different.
Even if your app is critical infrastructure (it isn't, and 99% of you shaking your head and saying it is are objectively incorrect), you don't need a software engineer to fix it. You need an SRE. That's completely different.