And you should expand on this with situation and timing details. In a talent starved startup like the one I was in, mentoring a nearly fresh out of college entry level employee was the only way to get the project completed in the available time ... except that very directly sowed the seeds of the destruction of both the project and the company.
Most US companies' management of software developers is horrible, see open offices, Agile as its actually practiced, etc. So I would expect the outcome of this process getting you replaced by your mentee to be common.
In that light, consider timing your mentoring period, which as I note can intrinsically be very rewarding, and I'd argue is vital as paying forward for the mentoring you yourself received, for when you want to leave your current company.
And since getting fired for doing a really good job is psychologically devastating for most if not nearly all people, and at least in the US makes it significantly harder to get a new job, don't wait to get pushed out, start your job search at an appropriate time. Especially since it's really unlikely you can't continue your mentoring after you leave the company, I certainly didn't, to this day. Although by now we're both so experienced, in somewhat divergent sub-fields, that the continued learning goes both ways.
Most US companies' management of software developers is horrible, see open offices, Agile as its actually practiced, etc. So I would expect the outcome of this process getting you replaced by your mentee to be common.
In that light, consider timing your mentoring period, which as I note can intrinsically be very rewarding, and I'd argue is vital as paying forward for the mentoring you yourself received, for when you want to leave your current company.
And since getting fired for doing a really good job is psychologically devastating for most if not nearly all people, and at least in the US makes it significantly harder to get a new job, don't wait to get pushed out, start your job search at an appropriate time. Especially since it's really unlikely you can't continue your mentoring after you leave the company, I certainly didn't, to this day. Although by now we're both so experienced, in somewhat divergent sub-fields, that the continued learning goes both ways.