Slalom Data Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 19 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Slalom.
Slalom
Data Engineer
Mid Average Negative experience No offer 4 rounds
Interview process
Recruiter call Technical screen Technical screen Panel
Interview formats
Technical Behavioral
The process started in June 2025 with two interviews, one with HR and another technical one. Then, there was a long pause where they didn't contact me for 8 months. They eventually tried to restart the process. The new process included two more interviews, one technical and one with the manager of the role. They also significantly changed the benefits, pay, and work schedule.
Confirmed questions1 question
- Can you explain the medallion scheme and how to set up an SCD2 table?
Slalom
Data Engineer
Staff Easy Positive experience No offer 3 rounds
Interview process
Recruiter call Technical screen Onsite
Interview formats
Coding Technical Behavioral
I interviewed with Slalom in 2025 for a consulting role, doing staff augmentation for a large client. The interviewer was nice. The question asked was valid palindrome.
Confirmed questions6 questions
- Valid Palindrome
- Test cases for Valid Palindrome
- How would you debug an EMR application that is taking longer than expected? Focus on your thought process.
Slalom
Data Engineer
Entry Easy Negative experience No offer 2 rounds
Interview process
Technical screen Phone screen
Interview formats
Technical Coding
I had a really bad time in the first tech round. The interviewer seemed to be in a bad mood and just assumed that if you haven't built a data warehouse or don't pull from multiple data sources, you're not a real DE. In big companies, the data warehouse is usually already there, and you just work on etls or data pipelines. After that, I got a sql and a python question, which were easy, but the interviewer had already made up her mind and was asking them just to go through the motions, not even caring about the answers.
Confirmed questions3 questions
- SQL coding question
- Python coding question
- Data structures question
Slalom Data Engineer Interview Questions
Quoted word for word from Slalom interview reports.
“How to use Spark filter and partition on a DataFrame.”
Read reports →“How to read and write to a DataFrame.”
Read reports →“What's the difference between Snowflake and AWS on the database level?”
Read reports →“Can you explain the difference between snowflake and star database structures?”
Read reports →“Can you write a SQL query to get all distinct records grouped by category from three tables?”
Read report →“What are strategies for optimizing the performance of a query that takes a long time to run?”
Read report →“Could you explain what a Surrogate key is?”
Read report →“Can you explain the medallion scheme and how to set up an SCD2 table?”
Read report →“How to approach problems starting from easy solutions”
Read report →Formats, difficulty and experience
Across all 19 Slalom interview reports.