dunnhumby Interview Questions
& Process

Started with a recruiter chat, then a 30-minute call with the hiring manager. After that, there was a 1-hour panel interview with three team members. The hiring manager asked typical questions like 'tell me about a time when'. The panel interview was more of a conversation, mixing examples, scenarios, and checking my knowledge and experience. They were pretty reasonable, got in touch, seemed nice, and had a clear process. However, they totally dropped the ball afterward and didn't reply or follow up, apparently because someone was sick. It took them ages, like several months, to eventually give feedback.

The interview process was terrible, disrespectful, and unprofessional. I was contacted for a Research Data Scientist role. Communication was minimal from the start; no intro call or role explanation, just an interview invite. The first interview, scheduled for an hour, was only 30 minutes. The hiring manager admitted he was new and the role was still being defined. After waiting three weeks with no update, I followed up with HR and was told I progressed. I chose a time for the next interview, but heard nothing. As the date neared, I had to find the hiring manager's contact myself to confirm the interview, which is unacceptable. The in-person interview was professional. I sent a thank-you email and got a timeline for an update, but the deadline passed without news. I followed up again and got a new timeline. When that deadline arrived, I asked for an update, but received no communication, and the deadline passed again. After chasing for a week (the third time), I finally got a brief rejection email from HR the next day. This email lacked any explanation, feedback, or apology, and was sent from a mobile with poor formatting and grammar. I even politely asked for feedback, but got no response. HR also falsely claimed they called me, which didn't happen; my phone was on, with no missed calls or voicemails, and no attempt was made to email. The whole process felt transactional, unprofessional, and disrespectful of my time. I have a very negative impression of the company's hiring approach and would strongly advise against applying unless you want to be treated this way.

The interview process had 3 rounds. First was a coding round on Hackerearth, which I passed. Then, there was a technical round with a 3rd party team called Intervue, which I also cleared. The final round was a technical interview with a Dunnhumby employee. The recruiter mentioned that clearing the first two rounds was tough. In the third round, the Dunnhumby employee was 15 minutes late without any heads-up, and the recruiter was also unresponsive to calls. After about 1 hour and 40 minutes, the third round seemed okay, maybe borderline. I never heard back after that. The HR recruiter didn't answer calls or texts on WhatsApp, basically ghosting me. Getting feedback is crucial for companies if they want to attract future candidates.

My interview experience was great! It was very quick and each step helped me learn more about the role, company and culture. Every step was virtual. The first round was a screening interview with the recruiter who explained pay and some of the benefits but mostly asked about my relevant experience. The second round was with a Director and Sr. Client Lead. This round was more competency based and situational based questions but they also explained the day-to-day aspects of the role. The final round was a case study presentation with another Director and Sr. Client Lead. They gave me the case study in advance so I had plenty of time to prepare my presentation. For roles above associate level, I believe you get the case study right before the interview but at that level it should be much easier to prepare. Case study was related to merchandising & retail KPI's. You get specific information to work with but it's still broad enough that you can take it whatever direction you want. I was nervous for the third round but when I was in it, it wasn't intimidating at all and more so seemed like they just wanted to hear me explain my thought process without there being any right or wrong answers. After presenting, there is time at the end for them to ask questions about what you presented and for you to ask questions. By the end, I felt very confident in my decision to pursue this role. Interviews are typically not fun but I very much enjoyed the process at dunnhumby!