The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Data Engineer
•
Coding
•
medium
Write a SQL query to find the nth highest salary from an Employee table without using the LIMIT or TOP keywords.
#Window Functions
#Subqueries
#SQL Server
Data Engineer
•
Coding
•
medium
Write a SQL query to calculate the cumulative sum of sales per region over time.
#Window Functions
#Aggregation
#Time Series
Data Engineer
•
Coding
•
easy
Given an Employee table with columns Id, Name, Salary, and ManagerId, write a query to find all employees who earn more than their direct managers.
#Self Joins
#Filtering
Data Engineer
•
Coding
•
medium
Write a query to find the 7-day moving average of sales for a retail client.
#Window Functions
#Moving Averages
#Data Analysis
Data Engineer
•
Technical
•
easy
Explain the exact differences between RANK(), DENSE_RANK(), and ROW_NUMBER() in SQL. Provide a scenario where you would choose DENSE_RANK() over RANK().
#Window Functions
#Ranking
Data Engineer
•
Technical
•
hard
You have a slow-running query in Snowflake with multiple joins and a subquery that processes millions of rows. How do you approach optimizing it?
#Query Optimization
#Execution Plan
#Snowflake
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.