Feedback after a rejection is the single most useful thing available for improving, and most companies don't offer it without being asked, often for liability reasons more than indifference. It is worth asking for anyway — the worst realistic outcome is silence, which is exactly what you already have without asking.
A short, genuinely gracious message works best:
"Thank you for letting me know, and for the opportunity to
interview. If you have a moment, I'd really appreciate any feedback
on where I could improve for next time."No pressure, no argument, no pushing back on the decision itself — just a genuine, low-effort request. Some companies will decline to answer, often for legal or policy reasons that have nothing to do with you personally. Many will give at least something if asked directly and politely, since it costs them very little.
The instinct when receiving critical feedback is to explain, justify, or argue against it. Resist that instinct entirely, at least until well after the conversation is over. The point of asking was to learn something useful, and arguing with the answer — even silently, even just in your own head in the moment — defeats the entire purpose of having asked.
Feedback is often vague — "not quite the right fit" is common and genuinely unhelpful on its own. If you can ask one clarifying follow-up without being pushy, do: "Was that more about technical skills, or more about the overall fit?" narrows a vague answer into something you can actually act on.
Write it down as soon as you get it, dated, alongside which company and stage it came from. After a handful of rejections, read them together rather than one at a time — a pattern across several ("technical fundamentals need work," showing up three separate times) is far more reliable and actionable than any single piece of feedback taken alone.
No feedback at all is common, not personal, and does not mean the interview went unusually badly — it usually just means the company has no formal process for giving it, or a policy against doing so. In that case, self-assessment fills the gap: immediately after the interview, while it's still fresh, write down what felt shaky, what you couldn't answer confidently, and what you'd prepare differently next time.
You don't have to wait for a real rejection to get feedback. A mock interview with a teacher, a further-along peer, or anyone technical willing to ask real questions and give honest reactions produces the same kind of useful signal, on your own schedule, without the emotional weight of a genuine rejection attached to it.