Your best senior engineers are often the ones who quietly resent the weekly 1:1. Here is how to make that meeting worth their time instead of a status update they could have skipped.
Most feedback changes nothing because it is vague, late, or aimed at the person instead of the behavior. Here is what actually moves someone, drawn from years of getting it wrong first.
The promotion to manager is not a promotion to senior engineer plus meetings. It is a different job with a different unit of output, and the first 90 days are where most new EMs quietly break themselves learning that.
After running hundreds of senior interviews, the signal is rarely about algorithms. It is about judgment, blast radius, and how someone reasons when the problem is underspecified.