[jillesvangurp]

Individual engineers don't and never did; managers/planners do (at least the more competent ones) and always did. There's a difference between running a bunch of primadonnas and running an engineering organization that gets things done on a schedule & budget consistently. It generally doesn't involve just winging it with some full stack ninjas and hoping for the best and tends to involve lots of planning, KPIs, metrics, resource planning, etc.