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      Data Scientist Interview

      Sep 23, 2025
      Anonymous employee
      Accepted offer
      Positive experience
      Average interview

      Application

      I applied online. I interviewed at NielsenIQ

      Interview

      Entretien technique Présentation rapide : le candidat se présente et résume son parcours. Questions théoriques : l’intervieweur pose des questions pour tester la compréhension des concepts fondamentaux (ex. : structures de données, algorithmes, principes d’architecture, méthodes de travail). Étude de cas / résolution de problème : on propose un exercice concret ou abstrait pour voir le raisonnement du candidat. Évaluation du raisonnement : ce n’est pas seulement la “bonne réponse” qui compte, mais aussi la logique, la capacité à expliquer son approche et à justifier ses choix.

      Interview questions [1]

      Question 1

      Quelle est la différence entre decision tree et random forest?
      Answer question

      Other Data Scientist Interview Reviews for NielsenIQ

      Data Scientist Interview

      Jun 28, 2026
      Anonymous Interview Candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied through a recruiter. I interviewed at NielsenIQ

      Interview

      Their interviews are a spam. I think they are training some models or collecting interview data, I answered all the pre screening questions correctly as they were more objective so I know they were correct, Never heard from them back

      Interview questions [1]

      Question 1

      ML process related questions, flow of designing a model
      Answer question
      2

      Data Scientist Interview

      Jun 24, 2026
      Anonymous Interview Candidate
      Sydney
      No offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at NielsenIQ (Sydney) in Apr 2026

      Interview

      Hr call, statistics test, case study, interview final with panel. Intially to three weeks to screening questions, then process looked to be very quick everything in four to five weeks. Later no response on followup or any update on portal. Atelast send some outcome and dont make people put in efforts and leave without a result.

      Interview questions [1]

      Question 1

      Behavioural questions on past challenges , experiences, projects.
      Answer question
      1

      Data Science Interview

      Jun 15, 2026
      Anonymous Interview Candidate
      Ciudad de Mexico
      No offer
      Neutral experience
      Easy interview

      Application

      I applied through a recruiter. I interviewed at NielsenIQ (Ciudad de Mexico) in Dec 2025

      Interview

      Me citaron a una entrevista de manera virtual donde uicamente me hicieron preguntas básicas sobre mis estudios de universidad y que materias llevaba además de preguntarme un poco sobre mis intereses y obligaciones que tendría

      Interview questions [1]

      Question 1

      Fue sobre mi experiencia en la escuela y que materias llevaba
      Answer question