1 min lesson
Tell it as a story
Tell someone how to act on this idea: "Don't tell a 'we' story here."
Step 1 of 2
Tell it as a storythe interview payoff
The behavioral and onsite rounds will ask for a model failure you debugged. The structure that lands is the same every time and it's the structure of the work itself.
“The migration agent kept dropping a decorator on about 8% of files. I pulled a failing case from the trace and saw the decorator lived in an import the agent never retrieved - bad context, not a model limitation. I fixed the retrieval to include the import graph, re-ran the eval set and the failure rate went from 8% to zero. Then I added those files as golden tasks so it can't come back.”
End every failure story on the metric that proved the fix. “It feels better now” is what loses the room; “8% to zero on the eval set and a regression test so it stays there” is what wins it. The metric is the whole point - it's the same rigor the role is screening for, told in past tense.
Don't tell a “we” story here. The behavioral round screens for extreme ownership, so use “I diagnosed, I fixed, I proved it.” Credit the team elsewhere, but own the failure and the fix in this answer.