I found that the managers within certain HQ teams encouraged and supported a "Mean Girl" management style within the team. If you don't go along with them they'll do "what ever is in their power" as a group and individually to isolate and control. Senior Management is fully aware and looks the other way. The leadership is responsible for the lack of action.
HR - placates the initial concern but ultimately back the manager and does nothing to look into or give credibility for the concern. Giving credibility to unproven and unqualified managers only manifest the problem and limits the growth of the team.
HR - should be a source of safety and support. I did not be find the HR team within Uber to be a safety source but a facilitator to manifest the problems and concerns.
There are many credible visionary leaders within the Uber organization, but the lack of credible management within certain departments is limited due to a lack of real management training.
Look for leadership that is inclusive, empowering and TRAINED.