I applied online. I interviewed at dunnhumby (London, England) in Mar 2021
Interview
The interview was an introductory round and involved around the previous experience. The interviewer was relaxed and helpful to answer most of my questions. However, I was so nervous and could not answer very simple questions like, decision trees are a supervised or unsupervised learning technique?
Interview questions [1]
Question 1
-decision trees are a supervised or unsupervised learning technique
- related to my projects and background
I applied online. The process took 3 weeks. I interviewed at dunnhumby (London, England) in Oct 2025
Interview
The process consisted of 3 stages, an initial call with the recruiter, an interview with a team member about my experience and the technical aspect of the role, and a technical assessment.
I applied through an employee referral. I interviewed at dunnhumby (Gurgaon, Haryana) in Sep 2025
Interview
Overall 3 rounds of interview involving two technical and one behavioural + case study round. First two rounds were with the team leads and the final round was with the hiring manager.
Interview questions [1]
Question 1
Questions related to your resume and projects.
Basic Array and SQL questions like leetcode easy and medium.
Questions on ML/DL topics particularly Ensembling algos, KNNs, Transformers and basic GenAI terminologies and methods
I applied online. I interviewed at dunnhumby (London, England) in Jul 2025
Interview
It was the first stage, I spoke with a person from HR. She was polite but the interview lasted 5 minutes because I was immediately rejected for having a graduate Visa. I have a Visa for the next 3 years and then I will become settled. I do not think that you can claim to be an inclusive company when you reject non-British people. Such a pity because I was excited for the opportunity and it seems like an interesting company!