I really like this, the Dropbox career framework, and the Monzo career framework. I synthesized all three recently into one that I keep for our company, and the work pays such dividends. We do quarterly performance reviews and not only does having a consistent standard make these fair, but it reduced my time to write them from 1 hour per report to about 30 min.

https://dropbox.github.io/dbx-career-framework/ https://github.com/monzo/progression-framework

And my nascent adaptation.. https://kevala-progression.herokuapp.com/