Sales interviews reward the ability to interview. That is the flaw, and it is particular to sales. Rapport, a clean narrative and a confident close are the job and the interview technique at the same time, so a strong performance in the room tells you almost nothing about performance in the role.
The cost of getting it wrong has risen. The Bridge Group's 2026 research across 158 B2B companies put average account executive ramp at 6.2 months, the longest they have recorded, with only 48% hitting targets. A weak hire now takes most of a year to become obvious, and that year costs a full salary while the target goes unmet.
Competency-based interviewing fixes this when it is built properly. In this blog, we explore what competency-based sales interviews are and why implementing them effectively is key for growing organisations.
When Sackett and colleagues reworked the evidence on hiring methods, structured interviews came out as the strongest single predictor of job performance, ahead of aptitude testing and personality profiling. Unstructured interviews, which is how most sales hires are still made, scored less than half as well.
Their research found that a badly run structured interview adds nothing over an informal chat, while a well-run one is among the strongest predictors available.
Plenty of interviews are described as competency-based. Fewer are built like it, the difference comes down to:
These work as a set. Miss one and the others do less than you think. The test is simple: if two interviewers read the same transcript and score it differently, something is missing.
Start with your own team and ask what separates your top performers from your median ones. That answer is your competency list, and it will change by role and by motion.
In a six-month enterprise cycle with five stakeholders, deal control and multi-threading determine the outcome, whereas in a high-velocity transactional motion activity discipline and call quality matter far more.
A mid-market or enterprise AE set will usually include commercial discovery, stakeholder navigation, deal control, judgement about which deals to walk away from, and coachability.
The competencies that work for an experienced closer will not transfer to an early-careers hire either, where you are assessing potential rather than track record and those will need building from the ground up.
Six competencies is the practical ceiling. Beyond that there is not enough time to probe any single competency properly, and the scores become superficial. Weight them as well, because a gap in deal control will cost you more than a gap in coachability.
The question should be hard to answer well without having done the thing.
"How do you handle objections?" invites a framework the candidate read somewhere.
"Take me through the last deal you lost at final stage, starting three weeks out" does not.
Anchor every question to a specific event, in the recent past, with an outcome you can follow to the end.
This is the part most interviewers skip, and it is where the signals typically lie.
Run the same ladder every time. What did you do? What did the buyer say back? What did you do next? Who else was involved and how did you reach them? How did it end? What would you change?
Six probes on one deal will tell you more than six separate questions.
Listen to how people describe ownership. Candidates who talk in "we" and describe deals as things that happened to them have often been carried by a strong process or a strong product. Not disqualifying, but it changes what you are buying and how long ramp will take. Candidates who can name the second stakeholder, quote the objection in the buyer’s words and own a decision they got wrong are describing something they did.
Worth knowing what you are up against: Resume Genius found that 36% of job seekers admit to lying in an interview, and a similar share have considered claiming skills they do not have. Probing is not cynicism, it is the mechanism.
Write the standards first.
For deal control, that might run from "describes deals where the buyer set the next steps" at the bottom, through "follows the process when prompted", up to "changed the outcome of a deal through deliberate action, including walking away from a bad one" at the top.
Use a four-point scale rather than five. A midpoint gives undecided interviewers somewhere to settle, and a set of scores clustered on three will not separate a strong candidate from an adequate one. Then have everyone score independently and submit before the debrief.
A competency interview tells you what someone has done. It does not tell you what they can do in front of you, and for a revenue role you want both.
Pick one exercise that mirrors your motion and score it against the same competencies.
A live discovery call against a realistic brief, a stalled deal handed over for review, or a written follow-up after the discovery exercise are all examples of work samples you can use for commercial positions.
Polish is no longer a signal. Greenhouse found that 63% of job seekers have now been interviewed by AI, and around 22% of candidates use AI live during interviews. Gartner goes further, with 6% admitting to outright impersonation and a forecast that a quarter of candidate profiles will be fake by 2028.
Every CV is sharp and every prepared answer is well structured. Three things follow.
A good process is recognisable. The competency set comes from your own performance data rather than a template, every candidate answers the same questions, and interviewers probe rather than converse. Scores are submitted before anyone discusses, a work sample sits alongside the interview, and the decision can still be explained in writing six months later against evidence rather than recollection.
None of this is technically difficult, but it takes more preparation than a conversation, which is why it remains uncommon, even in businesses that hire continuously.
We partner with fast-growth businesses to build, scale and strengthen go-to-market capability, from early-careers intake through to executive search and placement of senior revenue leaders.
We take the process end to end: defining the competencies against your sales motion, designing the assessment, then running the interviewing and scoring. Our team has built and led revenue functions, so the frameworks come from having done the job rather than from a template and we spend time understanding how your organisation sells before designing anything. You get the capability without having to build it internally.
Businesses usually come to us with one of two problems: they cannot reach the candidates they need, or they cannot tell which of the candidates in front of them will perform. Both are solvable, and they are usually worth addressing together. You can explore all our solutions on the website, or contact us to discuss your requirements.
A structured interview where every candidate answers the same job-specific questions, and where answers are scored against standards agreed in advance rather than judged on overall impression.
Four to six. Fewer leaves gaps, more spreads the interview too thin to probe properly.
About an hour for four to six competencies, if you are probing properly. Two competencies explored in depth will tell you more than six skimmed.
Yes, and assume they will anyway. Draw the line at live assistance during the interview and say so in writing. The better answer is an assessment that AI preparation alone cannot pass, which means real-time probing and a work sample.
No. The interview evidences what a candidate has done, the role-play shows what they can do now. Use both, scored against the same competencies.