Eugene Yan's latest mailbag takes on a recurring question from readers who have been promoted to senior data scientist after only three years on the job. The milestone is flattering, but many newly minted seniors immediately feel they don't belong — a textbook case of imposter syndrome.
Yan's response frames the situation as a shift in responsibilities rather than just a title change. Senior data scientists are expected to influence projects, mentor others, and take ownership of outcomes that span beyond a single notebook or model. The unease comes from measuring a new job against the old job's skills.
The article does not dismiss the feeling as a personal flaw, but treats it as a normal reaction to a real change in scope. For readers in the same position, the key is to focus on what the new role demands, seek feedback from peers and managers, and recognise that confidence lags behind competence during any transition.