Interviewing SDR candidates: signal over polish

The best interview of the month was a candidate who had researched the company, delivered polished answers, and asked smart closing questions. The best rep of the year was a candidate who stumbled through the interview, then rebuilt her role-play from scratch after one piece of coaching. Interviews are built to find the first person. The job belongs to the second.

Polish measures the wrong thing

An interview is a prepared conversation with high stakes and a known format. Cold calling is an unprepared conversation with low stakes and no format. Performing well in the first predicts performing well in interviews, which the job never involves again. Roughly one in five new SDRs is gone within ninety days, and a share of those misses trace straight back to hiring on presentation: the candidate interviewed beautifully, and interviewing beautifully was the whole skill.

Three traits predict the actual job. Curiosity, because discovery is sustained interest in someone else's business, and interest cannot be faked forty times a day. Resilience, because the role is structured rejection, and the number that matters is what a rep's eighth call sounds like after seven bad ones. Coachability, because the job is learned by iteration, and a rep who cannot metabolize feedback stops improving in month two.

The role-play that reveals them

Claims about traits are worthless, and interviews full of rehearsed stories produce more claims. The traits show up under a simple three-step sequence.

• Run a short cold call role-play. You are the prospect. Be politely difficult, the way real prospects are. Watch the questions the candidate asks, not the pitch they deliver.
• Coach one specific change. Not general feedback. One concrete adjustment: shorten the opener, ask before pitching, pause after the brush-off instead of pouncing on it.
• Run it again. The second pass is the real interview. A candidate who visibly applies the coaching just demonstrated coachability in front of you. A candidate who delivers the same performance twice just demonstrated the ceiling.

Two additions round it out. Ask the candidate to teach you something they genuinely investigated on their own, any subject, and listen for whether the curiosity is real or decorative. Then ask them to describe the worst stretch of rejection they have pushed through. The content matters less than the specificity, because resilience that actually happened comes with details attached.

The part after the hire

A good hire is the start of the work, not the end of it. The traits need a system around them: weekly call review to give the coachability something to chew on, and a real career structure so the resilience has a horizon, the case we made in the career SDR post. And the hire itself is one job of five, with recruiting, systems, data, and coaching stacked around the seat, the load we detailed in your first SDR hire is actually five jobs.

We run this exact sequence when we hire our own reps, because our model only works if the person in the seat improves every month. If you are building the seat in-house, steal the role-play; it costs twenty minutes and saves a quarter. If you would rather buy the seat with the hiring already done and the coaching already running, that is what we built. Book a strategy call and we will tell you honestly which side of that line your situation is on.