Scrum does not formally recognize levels of seniority. All members of the development team have the same role. You can read the official Scrum guide here, it's

Scrum does not formally recognize levels of seniority. All members of the development team have the same role. You can read the official Scrum guide here, it's a few pages long: https://www.scrumguides.org/docs/scrumguide/v2017/2017-Scrum-Guide-US.pdf https://www.scrumguides.org/docs/scrumguide/v2017/2017-Scrum... I think Scrum exists only to expand the adoption of Scrum. That is at least the reason behind the role of "Scrum master". By maximizing adoption, the authors can personally benefit and become rich and famous.