• Walmart chief people officer Donna Morris oversees more than 2 million workers globally.
• She shared three green flags that make her lean in during a job interview.
• Morris said she likes to see a track record of grit in a candidate.

Donna Morris oversees over 2 million employees, so she knows a strong candidate when she sees one.

Walmart's chief people officer identified three green flags that make her lean in during a job interview — regardless of the role they're applying for. First, she told Business Insider that she looks for a genuine alignment with the company's purpose and values.

Second, she wants to see an ability to take on multiple responsibilities and make things work.

"They demonstrate a track record of grit," Morris said, defining those individuals as people who have overcome adversity.

In an ideal world, she said that means they've worked on the frontline, since so many of Walmart employees have customer-facing roles. She said the company looks for candidates with a focus on service.

Morris, who started working at 13 at a dry cleaner's and then worked at a drugstore for eight years, said that if a candidate has never experienced what it's like to be a frontline hourly worker, it may be challenging for them to lead. Morris said those jobs gave her purpose, and she found it hard to resign.

Now, when she interviews candidates, Morris said her go-to question is "If I was to ask people who've worked for you before, what will they tell me?" She said the open-ended question generates a genuine response and helps her gauge whether the person is focused on servant leadership, which is a "big green flag."

Asking this question allows her to hear more about a candidate's first job or a work experience. She said that while graduating from an Ivy League school is valuable, she's more focused on hearing about what they've learned from work experience.

"What was the grit they had to persevere through?" Morris asked.

The chief people officer, who worked at Adobe for more than 17 years before joining Walmart, said that her third green flag is candidates who are passionate about making a difference.

"That, to us, would be really, really key," Morris said.

• Walmart has more than 2 million workers — 500 of whom are promoted daily.
• Its chief people officer said she observes 2 qualities in those who move up the ladder quickly.
• First, they do the job they have well. They also show they can take more on.

Walmart promotes roughly 500 employees daily — so there's no shortage of opportunities to climb the ladder.

Workers who advance quickly tend to share two qualities, says Walmart chief people officer Donna Morris, who oversees the company's workforce of more than 2 million people worldwide.

The first is staying focused on the job in front of you, she said. Morris said the employees who stand out are motivated to make a difference and excel in their current roles.

"They are focused as much, if not more, on being exceptional at what they're doing today," Morris told Business Insider.

Once you nail the actual job you were given, the next step might be proving you can take on responsibilities for the role above you — before you get the title.

"Be the type of person that takes on over and above what's being expected of you," Morris said. "Be the person that asks or provides volunteerism for new ideas or new initiatives."

That also includes coming up with new ideas or volunteering to help with new initiatives. Morris said those actions show you can take on more responsibility.

In general, when hiring, Morris said she looks for evidence of the "grit that they had to persevere through." At Walmart, where most of its 2.1 million employees begin in frontline roles, she also likes to see that candidates have had some frontline experience. The chief people officer said it doesn't need to be in retail necessarily; it could be babysitting or helping out with a family business.

"If somebody has never really had to identify with what it's like to be a frontline hourly worker, it's going to be very hard for them to lead," said Morris, who started working at 13 at a dry cleaner's before taking a job at a drugstore two years later.