Tracking Individual Resource in Scrum

I've observed that many of our development teams transitioned to following Scrum a long time ago.  In that time, I've yet to see any adjustments with regards to tracking an indivual's performance.  We continue to track success by asking the lead (or most senior) developers for their observations of the other developers on their team.

From a Scrum perspective I suppose you could try to track the performance of a Scrum team and award everyone on that team if they did well.  But then again, how would you define success or failure for the team?

If you can describe what a good team member does, perhaps they can be rewarded accordingly.

Example: a good team member is the sort of person who goes to where the work is. They don't live in a skill silo and wait for work to come to them. They do the work that needs doing when it needs doing, to the quality required for the increment to be Done, whatever that work might be.

To avoid disparity and unsettle the cohesive team it would be good to get the inputs from the team members.

Example: Sprint Retrospective even where team members appreciate or highlight the work contributed by team members in achieving the sprint goal.

Individual user story can be assigned to each team members and quality of delivery within define timeline can be tracked like zero defect user story delivery can be rewarded.

We encountered the same problem in our organization. As a solution, most senior member of the development team gives feedback about each team member as Daniel pointed out.