PwC
PricewaterhouseCoopers, a multinational professional services network.
4 Rounds
~21 Days
Medium
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 top 3 highest paid employees in each department. If there is a tie, they should have the same rank.
#Window Functions
#DENSE_RANK
#Joins
Data Engineer
•
Coding
•
hard
Given a table of client project assignments with start and end dates, write a SQL query to identify any overlapping date ranges for the same consultant.
#Self Joins
#Date Functions
#Complex Logic
Data Engineer
•
Coding
•
medium
Write a SQL query to calculate the 7-day rolling average of daily sales for a retail company.
#Window Functions
#Moving Average
#Date Functions
Data Engineer
•
Coding
•
medium
Write a SQL query to find the second highest salary in an employee table without using the LIMIT, TOP, or FETCH keywords.
#Subqueries
#Aggregation
#Max Function
Data Engineer
•
Technical
•
easy
Explain the difference between RANK(), DENSE_RANK(), and ROW_NUMBER() with a practical data engineering example.
#Window Functions
#Analytical Functions
Data Engineer
•
Technical
•
hard
How would you approach optimizing a slow-running SQL query in a distributed data warehouse like Snowflake or Azure Synapse?
#Performance Tuning
#Execution Plans
#Indexing
#Partitioning
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.