A recruiter will first contact you for a couple of logistics questions like why us, willingness to relocate, and salary expectations. Then I took a 1-hour technical interview with three interviewers.
Preguntas de entrevista [1]
Pregunta 1
Describe past project experience. What kinds of models? Some details about model formulation and algorithms. How do you collaborate with others?
Envié una solicitud electrónica. El proceso duró 2 semanas. Acudí a una entrevista en Delta Air Lines en may 2025
Entrevista
The interview process consisted of several stages. First, I had a phone screening with the recruiter. Then I had a 30-minute phone interview with the hiring manager. After that, I was given a dataset and a set of tasks where I needed to perform data preparation, exploratory analysis, and build a prediction model; I uploaded my completed work for review.
Next, I participated in a 4-hour panel interview with a team of 4–5 people, during which I walked them through my entire workflow and answered technical follow-up questions. I believe there was also one final step after that, completing the overall process.
Preguntas de entrevista [1]
Pregunta 1
One of the questions I was asked in my data science technical interview was to flatten a nested dictionary. The original dictionary contained a mix of dictionaries and lists as values, and those lists and dictionaries were also nested inside each other. My task was to fully flatten this structure into a single list.
Solicité el puesto a través de la escuela superior o la universidad. Acudí a una entrevista en Delta Air Lines en abr 2025
Entrevista
This stage often includes questions on data science concepts and SQL proficiency.
Example questions:
"Explain how you handled data imbalance in a project."
"Write a SQL query using advanced functions like LEAD and LAG
Describe a time when you were overwhelmed at work. What was the situation, and how did you handle it?
Preguntas de entrevista [1]
Pregunta 1
Tell us about yourself ?
About my projects, my work experience
I applied for a Data Scientist position and received an online assessment relatively quickly. However, after completing the OA, I didn’t receive any further updates from the company. There was no follow-up interview or communication regarding the next steps.