In addition to the high likelihood that they are asking for an advanced junior dev “Picking between an Arc<T>, a Box<T>, and an &T is second nature to you.” (Not that advanced of a skill), even if they have a closed source webapp, they are still predominantly open source (that position is for that part), they don’t have much money. For that it’s not great, but not horrible either.

For a deeper showcase (the complete cgp example adapted): https://github.com/Aras14HD/abstract_impl_showcase

I have to admit I still readily reach for dbg! to narrow down where the problem is happening (instead of endlessly stepping through), especially in async. But when I do I put in one or two a function and upto one an await. Then I make a breakpoint before that and debug if I didn’t find it by just a short look.