"It depends". A managers job is to understand the business and what the strategy and ultimate goals of the business are and to direct their organization in such

"It depends". A managers job is to understand the business and what the strategy and ultimate goals of the business are and to direct their organization in such a way that contributes to this. This means staffing, equipping, training a team and then ensuring that the best possible objectives are being met that contribute to the larger organizational objectives. To ensure their cog is functioning optimally. That their KPIs are being hit effectively and that they make sense. They should ensure the right code is being written and that it's of high quality and know who is contributing what. They should design and use metrics to measure this. They should nurture, yes, but they aren't a parent. But yes they should identify when a team member is coming up short and help them get on track but the contributor needs to come equipped with the basic skills - which is the managers responsibility to judge during hiring. To be sure, a manager who tends to have trouble with low performing contributors they've hired usually shows the managers is ineffective at hiring.