The data you see is biased negatively - you have recruiters fees for one sitting above the salaries you see. People complaining on glassdoor are probably not th

The data you see is biased negatively - you have recruiters fees for one sitting above the salaries you see. People complaining on glassdoor are probably not the highest paid team members. You also have the fact that people who are paid well usually make the connection through their own personal networks over job boards. Hence the job boards have the entry level salaries. After all of this - for the above average workers, the 'average salary' might be much higher, since they're going to be experiencing better opportunities. They don't get a true sample of the 'average'.