The tech industry has worked hard over the years to make it clear that there is a career path for people who don’t want to become managers.
Most companies have carefully created separate senior career tracks that provide details of the differences between being a manager and being an individual contributor (IC). And yet, many people still believe that you can’t get ahead without becoming a manager, and many companies who want more senior individual contributors struggle to promote people on this path. This is a shame; great engineers really shouldn’t need to manage large teams to get promoted, and companies lose out on a critical skillset when they push all of their good engineers into management.