Hire a Top Performer Every Time with These Interview Questions

Hire a Top Performer Every Time with These Interview Questions

Koru CEO Kristen Hamilton helps hundreds of people hire and get hired every year. These are the traits she knows translate into excellent performance on the job.

Hiring the right people is extremely hard. Not only is the market tightly constrained — especially for tech companies, but the unwritten rules for how to hire are often plain wrong. With more candidates who “look good on paper” going on to flounder at startups, it’s time to rethink what qualities actually make someone a great employee.

As the co-founder and CEO of Koru, an immersive business-training program designed for newly-minted job seekers, Kristen Hamilton works to bridge the gap between graduation and employment, and place people in jobs where they’ll excel. Working with candidates who lack real-world experience has had a surprising byproduct — she now has a crystal clear sense of the skills and traits that make people great performers.

Hamilton has channeled this knowledge into a new paradigm for what a high-impact hire looks like and how to find one. As such, Koru doesn’t put much stock into typical metrics like college rank or GPA. Instead, Hamilton and her colleagues have identified the skillsets and mindsets that are most predictive of on-the-job success.

They arrived at seven characteristics that, taken together, best translate into someone killing it at their job. These traits transcend department or career stage, and they apply to entry-level engineers and marketing executives alike. Most importantly, they work: 85% of the young people accepted into Koru’s program (which uses the same seven measures to screen candidates) land jobs quickly. Many of them field multiple offers. And the companies that hire them (like LinkedIn, Facebook and Yelp) have been uniformly impressed by the results.

Laszlo Bock, head of People Operations at Google, spearheaded research looking at everyone they hired to figure out if high GPAs actually correlated with performance. Turns out they don’t," Hamilton says.

The combination of hard and soft skills that drive business impact are the best indicator of success.

While walking us through the Koru7 (as she calls this new hiring rubric), she shared specific interview questions and tactics startups can use to make sure they’re not just hiring the candidates with traditional markers of success, but rather the ones who will actually do an incredible job.


Startups are as fast-paced as they are nebulous. In the modern workplace, it’s not unusual for hires to be the first to hold newly created positions without clear mandates. They need to be able to figure it out while going a hundred miles a minute. At the same time, the inevitable monotony of day-to-day grunt work hasn’t gone anywhere. Through the frenzy and the lulls, you want team members who are tenacious and resilient.

What to ask: “We look for a time the candidate wanted something so badly, they were unstoppable in pursuing it. Or a time they overcame an obstacle,” Hamilton says. As you listen to the answers to those questions, pay close attention to both the tasks and the duration described. “Try to get a sense of how long that person can stick it out. How long are they going to beat their head against a stats problem?”

Because it’s important to remember that true grit might be revealed by something as mundane as a stats problem — you’re not necessarily looking for a heroic story here. A history of persevering through mind-numbing boredom can be one of the most valuable predictors of strong performance.


Data, and the tools we use to get it, are multiplying. And that’s great news — but numbers in a vacuum are meaningless. “It’s true in every single job, from entry-level to the executive suite: you need to be analytical and data driven and exhaustive. More and more tools are available, but you have to know what questions to ask of these tools,” says Hamilton. Rigor refers to a candidate’s ability to take in evidence, integrate information from multiple sources, derive meaning from it, and make critical decisions quickly. Whether you’re a data scientist or a customer success rep, you need to be able to do this.

What to ask: In many ways, this is the easiest trait to test. For more technical roles, you can even build a timed Excel test with some practice problems or logic tests. Otherwise, case-style questions will do the trick. “Ask candidates to tell you about a time they used data to make a decision. Look for details about the complexity of the data and how the thinking happened, rather than focusing on the right answer,” Hamilton says.


Leaders need to know that everyone on the team understands the company’s goals and is structuring their work to achieve them. You want to find people who can think deeply about their roles — people who have advanced understanding of how their work connects to their coworkers’ and the company at large — and organize their priorities to drive business value in the right ways.

What to ask: Have your candidate tell you about a time they had a measurable (read: quantitative) impact on a job or an organization. For example, were they responsible for generating revenue or recruiting X new teammates or doubling the number of people reached. Another valuable line of inquiry: Ask about a person or organization that the candidate admires, and why they think that person or organization has made an important impact. “You’re looking for signs that the candidate understands the larger picture, and that they can speak to the importance of making trade-offs and prioritizing appropriately.”


There are no dark corners in organizations anymore,” Hamilton says. Cross-functional teams are the norm, and as companies and industries become increasingly global and transparent, the desire to create a more diverse workforce will only grow stronger. Professionals who are able to understand different social styles are the key ingredient of a healthy, collaborative team. Look for candidates who know their own strengths and weaknesses, and can empathize with others — the hallmark of empathy and high EQ.

What to ask: “There's interesting research that ties teamwork to the ability to recognize emotions in other people, and EQ can be measured with 10 or so questions. That's how we approach our teamwork assessment,” says Hamilton. Your questions here can be straightforward: When working on a team, what's hardest for you? What about a time you worked on a difficult team? What was your role and experience? What makes you happiest and most effective when working with others?

One trick Hamilton has picked up in hundreds of interviews is to filter these questions through the lens of a candidate’s friends or family — that is, ask what a candidate’s best friends would cite as their key strengths and weaknesses. “People are more honest that way. It’s much better than asking their weaknesses directly.”


“Bad things happen all the time: your boss quits three days after you start, or your job isn't the one you applied for,” Hamilton says. Successful professionals are the ones who make lemonade out of lemons — not the ones who dwell on those frustrations. And a positive attitude, while crucial, isn’t enough. You’re looking for people who take the initiative to fix their problems and move forward fast.

“The right candidate makes no time for blame or fault. Ownership fosters a ‘We’ culture, not an ‘I’ culture. Listen to how often they use those words respectively.”

What to ask: In Hamilton’s experience, this trait has perhaps the most dramatic impact on an organization’s culture — so don’t neglect it in your interviews. “So much is connected to the ownership piece, from the top to the bottom of an organization. Once energy vampires are in, they’re really toxic. Even if they perform well in other ways, they drag people down and create politics.”

To “test” for this in an interview, you actually need to tempt candidates into feeling sorry for themselves (as strange as that sounds). “You want to ask about a time they experienced an injustice, and then empathize with the unfairness. You say, ‘Are you kidding? That's crazy. What a jerk.’ Owners will immediately respond with something like, ‘Yeah, but I recognized it wasn't worth my time to complain about it.’ They won’t buy in and double down on venting or complaining,” Hamilton says.

She recalls one particularly poignant response to this question, from a candidate whose mother was diagnosed with cancer just as the candidate’s stepfather was leaving her mom and her house was being repossessed. In the midst of it all, her grades fell and she had to drop out of college to care for her mother. “It’s not hard to say, ‘Wow, that’s awful,’” Hamilton says of the situation. “But that candidate immediately responded, ‘Here’s the thing: it’s not important. There’s no reason for me to be complaining about it, and I realized it was making me stronger.’ Imagine the difference in the workplace between someone like that and someone who allows themselves to be a victim.”


This trait carries a lot of punch and is an excellent indicator of a whole range of other qualities you want to hire into your company: Empathy, creativity, innovation, the ability to learn quickly — they all spring from curiosity.

What to ask: Start by asking a prospective hire the last thing they really geeked out about. It doesn’t have to be work-related—in fact, it may be better if it’s not. “I interviewed someone the other day who told me he was his friends’ go-to when they bought anything,” says Hamilton. “He was famous for researching guitars down to the type of wood they were made of, for example, and he knew every part in a ’67 Mustang. If someone doesn’t have that quality — if they don’t need to learn every single detail of the topic in front of them — they’re probably not going to reflect that level of engagement in their work, either.”

And never wrap up an interview without the deceptively simple “Do you have any other questions for me?” This may actually be one of the most telling exchanges of your interview. “If they don’t, then they better have already asked you plenty of things along the way,” Hamilton says. “If a candidate has no questions, that’s a bad sign. At the very least, they should ask questions about the individual interviewer, showing they’ve done their research and know what the person in front of them can teach or offer.”


Throughout your interview process, look for authentic, confident expression in all forms, from the candidate’s body language or posture to their written and spoken communication. “We work with a lot of entry-level people who can write a long term paper but can't put together an email with three concise bullets that are clear and relevant,” Hamilton says. Pay attention to whether a candidate can hang back when that’s most appropriate, too. “Knowing when not to open your mouth and when to give someone else the floor speaks tremendously to character.”

What to ask: Polish is equal parts what candidates say and how they say it, so be sure you’re considering both. How do they conduct themselves when they interject? Do they send a thoughtful thank you note following your conversation? Do they communicate gracefully and efficiently, saying whip-smart things in the fewest words possible?

Koru’s job marketplace application requires that applicants submit a short video, which is particularly instructive. “It’s hard to come across as calm and confident with a camera pointed at you,” Hamilton says. For this exercise, she keeps the questions simple: What makes you gritty? Tell us about a time you had an impact.

Whether in person or on film, though, Hamilton is looking for the same thing: Whether the candidate is poised and energetic. “The thing that trumps everything is likability. People want to be around and hire people they like,” Hamilton says. “Hire people who are engaging and who will bring energy into a room or a meeting.”

Each of these seven traits is important for just about every hire. As you use them, though, you may find that you weigh them differently depending on the characteristics you most need in a given role. “A marketing analyst will need high rigor and high grit so they can keep testing testing testing — but you may be less concerned about polish than you would be if you were hiring a salesperson. Someone who acts as a liaison between developers and other team members, on the other hand, has to be really polished and curious,” Hamilton says.

Remember, too, that your company’s culture is unique. “We came up with the Koru7 by asking employers tons of questions and reverse engineering what a great performer actually does day-to-day that makes them great. But leaders can assess this for their own organizations to come up with even more theses about what makes a top performer at their company.”


As you apply the seven traits above (or your own version of them) to your hiring process, Hamilton recommends prioritizing a few key strategies:

Aim for consistency. Much of your hiring data is coming through an inherently subjective interview process, but there are things you can do to standardize qualitative feedback and responses as much as possible. “We have a very consistent rubric—here's what a 1 is and a 2. We have debates, really health debates with our team, about whether that person was a 4 or a 3 on a given trait,” Hamilton says. She compares it to her varied experience ranging from large tech companies like Microsoft, to consulting firms and nonprofits, where she held various roles in product planning, operations,strategy and marketing. At these organizations, she found that there were extensive interviewing processes in place, but no clear numbers or rating systems.

“Everyone would email in their specific feedback — hire or don’t hire, pros and cons — but there was no consistency to how each person was assessing those pros and cons,” she says. “If you’ve clearly defined the qualities you care about, you can get much closer to measuring them consistently.”

Note that you won’t arrive at those well-defined qualities and measurements right away; Hamilton estimates it was about six months before Koru had its first standardized rubric for selecting applicants to its program. But in her experience, it’s well worth the investment.

Once you’ve identified the traits you’re looking for — and the competencies you associate with each one — make sure anyone who ever interviews a candidate knows them cold. Clearly define terms like “ownership” and “grit,” and educate your team about why you’re looking for them. Then after interviews, get together again to regroup to calibrate your assessments of the candidates.

Handle your data with care. In fact, you should treat your hiring data with the same rigor and attention you would give sales numbers or email open rates. As you gather more and more of it, this is the information that will set you up to make smart hiring decisions time and time again.

When it comes to organizing that information, Hamilton even suggests leveraging a surprising tool: Salesforce. “At Koru, we do everything in Salesforce. We take notes on candidates, both qualitative and quantitative. We built the tool to include pop-ups with key definitions and questions so that everyone was working with the same understanding of what the role required and didn’t have to rely on memory for what a good answer looked like.”

She also recommends standardizing questions as much as possible to further control the data that various interviewers are gathering. If the same question is asked by multiple people, you want to make sure they ask it the same way, so that you can accurately judge the consistency of the person’s answers. This will be particularly important when you’re interviewing at higher volumes, and it will make your team’s post-interview debriefs as productive as possible.

Fish from your own pond. It’s a point worth repeating: Forget top college names. Move on from GPA.

The tech community and innovative companies are now choosing grit over grades.

“Those who did well in school may have had the luxury of being able to study, while someone else had three jobs and juggled other responsibilities. And those people are a lot less entitled,” Hamilton says. Moreover, many startups in particular simply can’t beat the industry giants in a hiring battle for those perfect-on-paper candidates. “Don't fish in the same pond as everyone else; you're competing against Google and they're going to pay more. You need another signal.”

Determine the qualities and competencies you care about and thoughtfully plug away at a rubric for finding them. Let that be your signal. Because if there’s one thing Hamilton has learned over the years — and proven with the predictive success of the 7 traits — it’s that you really can’t judge a book by its cover.

“My favorite example is a guy who went to Bates College and studied rhetoric,” she says. “He had no business context — he thought ‘sales’ was a dirty word — but he scored very high on the grit algorithm. He had lived in the woods on his own wits but he wouldn't have known that he could translate that into something that would be exciting for a software company,” Hamilton says.

After completing Koru’s Seattle training program, he learned the value of his unique experience, and was pursued by two top companies, Amazon and Smartsheet. Now he’s in sales at Smartsheet, and he’s nailing it. “If that’s not proof that there’s a lot more to learn about people than you can read on a report card and resume, I don’t know what is. Startups can’t afford to hire low-performers. It’s time to let a new model do the picking for them.”