Staff+ Engineer

Learning from other people's experiences

The Principal Engineer's Handbook by Ilya Grigorik https://ilya.grigorik.com/the-principal-engineers-handbook/

Books

Staff Engineer: Leadership beyond the management track by Will Larson https://staffeng.com/book
The Staff Engineer's Path by Tanya Reilly https://www.oreilly.com/library/view/the-staff-engineers/9781098118723/