Backing a claim
A claim is an assertion. Backing it means a reader can check it without taking your word for it.
Start from the line itself. Take one bullet you would defend in an interview — not the most impressive one, the one you actually lived. Read it as a stranger would and ask what is being asserted: a decision, an outcome, a responsibility, a skill under pressure.
Then supply the part the sentence had to leave out. Evidence is specific, first-hand and situational: what the situation was, what you decided, what it cost, what changed afterwards. The detail that cannot be generated is the detail only a participant would have — the constraint you worked around, the thing that went wrong first, the number you remember because you owned it.
Keep the pairing tight. One claim, one piece of evidence. A wall of material attached to a vague line is not backing; it is volume. The useful unit is small enough to review in under a minute and specific enough that it could not be swapped onto someone else's resume.
Cover the categories, not just the highlights. Most people can evidence the same one or two strengths repeatedly and leave whole areas — how they collaborate, how they handle failure, what they own end to end — with no record at all. Those gaps are where a reader has nothing to go on but your phrasing.
Finally, make it portable. Evidence that lives only in an interview does not help you get the interview. It has to be attached to the claim and travel with the document wherever the document goes.
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