I’ve been in hiring roles for over 20 years, and the single most important thing I’ve learned about how to do a job interview is this: structure everything. A successful interview doesn’t happen by accident. It starts long before the candidate walks in (or joins the Zoom call). You need to define the exact competencies the role requires, then build a structured interview guide with consistent, behavior-based questions for every candidate. This approach removes bias and makes it easier to compare apples to apples.
Here’s what I do every time. First, I review the job description and identify three to five core competencies. For each one, I write a behavioral question (e.g., “Tell me about a time you had to resolve a conflict with a colleague using data.”) Then I prepare a scoring rubric with clear benchmarks—like 1 = does not meet expectations, 5 = exceeds expectations. I also leave space for specific notes. During the interview, I stick to the script. I ask follow-up probing questions only to clarify, not to lead the candidate. After the interview, I score immediately while the conversation is fresh.
The data backs this up. Research consistently shows that structured interviews are far more predictive of job performance than unstructured ones. Here’s a quick comparison:
| Interview Type | Predictive Validity (Correlation) | Common Bias Risk |
|---|
| Structured (behavioral) | 0.55 – 0.65 | Low |
| Unstructured (conversational) | 0.20 – 0.30 | High |
| Panel (structured) | 0.60 – 0.70 | Moderate |
Another critical piece is listening for real evidence. Many candidates are good at telling you what you want to hear. I push for specific examples: “What was your exact role? What was the outcome? What did you learn?” This separates the storytellers from the people who actually did the work.
Finally, end every interview with a clear next step. Thank the candidate, explain the timeline, and let them ask questions. That last part is another data point—the quality of questions a candidate asks tells you a lot about their preparation and genuine interest. Stick to this process, and you’ll consistently make better hires.
