I’m definitely not looking at the raw number of Jura tasks here close. But I’m not looking at that for junior devs either.
Edit - usually, the more junior drive are more in awe of the principals. I’ve never encountered one who outwardly seemed to think the principal wasn’t contributing. More than likely, the principal was actively helping them get their own tasks done.
Some examples, number of on time deployments, number of story points, number of bugs... I’m not saying this is perfect, but that’s how some people are measuring.
So if a PE is responsible for improving juniors, I suppose a PE can be judged on the size and complexity of projects their juniors are able to take on. Maybe the time to promotion and number of juniors getting promoted?