https://twitter.com/gankro/status/1046438955439271936 https://twitter.com/gankro/status/1046438955439271936 Mozilla engineer leveling chart is a good example.

https://twitter.com/gankro/status/1046438955439271936 https://twitter.com/gankro/status/1046438955439271936 Mozilla engineer leveling chart is a good example. There are probably other companies that expose the criteria they use as well.