Data Engineering Interview Prep

Land your dream data engineering role at Meta, Google, Amazon, Microsoft, Walmart, DoorDash, and other top companies. Learn from mock interviews, frameworks, and advice from senior candidates. Practice data modeling, pipeline design, SQL, coding, behavioral interviews, and more.

Taught by Senior Data Engineers & Leaders at Meta, Amazon, Databricks, and more

Juno L. Data Curriculum Lead, Udacity, Databricks

Pankaj T.Data Engineer, Meta

Karthik R.Data Engineer, Meta, Macquarie

Deeptaanshu K.VP Data Engineering, The Arena Group

Angelica C.ML Engineer, Google

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What you'll find in these courses

6 courses

80 hours

Data Engineer Interviews Introduction

3 lessons

Learn what to expect what to expect in your data engineering interviews and how to start preparing.

Welcome to Exponent’s Data Engineering Interview Course!Free

The Data Engineering Interview Loop

Data Engineering in Big Tech

Data Modeling Questions

7 modules

36 lessons

6 videos

Learn how to answer data modeling interview questions on topics include dimensional modeling, fact tables, normalization, star schemas, and more.

Introduction to Data Modeling QuestionsFree

How to Answer Data Modeling Questions

Rubric for Data Modeling Questions

Data Modeling Fundamentals

Introduction to Gathering Business Requirements

Recognizing the Core Business Problem

Analyzing Metrics

Analyzing Query Patterns

Defining Latency Requirements

Data Volume & Scalability Considerations

Data Retention Policies & Historical Data Management

Example: Business Requirements Gathering

Creating High-Level Model Diagrams

Evolving Models Based on Changing Requirements

Practice: E-commerce Platform

Practice: Social Media Analytics

Practice: Video Streaming Service

Practice: Ride-sharing Platform

Practice: Cloud Services Platform

Practice: Online Advertising Platform

Dimension Table Design

Slowly Changing Dimensions (SCDs)

Advanced Dimension Design Techniques

Transaction Fact Tables

Periodic Snapshot Fact Tables

Accumulating Snapshot Fact Tables

Bridge Tables (Factless Fact Tables)

Date-Based Partitioning

Indexing Strategies

Aggregates and Materialized Views

Design a Data Warehouse Schema for a Ride-Sharing Service

Design a Data Warehouse Schema for Customer Support

Design a Data Warehouse Schema for Airbnb

Design a Data Warehouse Schema for Stripe

Design a Data Warehouse Schema for Instagram

Design a Data Warehouse Schema for Amazon

Data Pipeline Design Questions

7 modules

30 lessons

3 videos

Learn to gather requirements, choose storage, and optimize extraction, transformation, and loading. Build scalable, fault-tolerant pipelines and avoid common pitfalls.

Introduction to ETL Design QuestionsFree

How to Answer ETL Design Questions

Rubric for ETL Questions

ETL Pipeline Tools & Technologies

ETL vs. ELT

Data Sources

Data Destinations

How to Approach the Data Extraction Stage

Real-Time Data Extraction

High-Volume Batch Extraction

Semi-Structured or Unstructured Data Extraction

High-Quality Data Extraction (Critical Data)

Data Extraction Tips & Takeaways

How to Approach the Data Transformation Stage

Real-Time Data Transformation

Batch Data Transformation

Data Cleansing & Enrichment Transformation

Data Transformation Tips & Takeaways

How to Approach the Data Loading Stage

Real-Time Data Loading

Batch Data Loading

Data Loading into Data Lakes

High-Quality Data Loading (Critical Data)

Data Loading Tips & Takeaways

Performance Optimization Strategies

Scaling an ETL Pipeline

Making your ETL Pipeline Fault-Tolerant

Design a Data Pipeline for Reality Labs

Design Netflix's Clickstream Data Pipeline

Design an ETL Pipeline for a ML Platform for AWS

SQL Interviews

9 modules

98 lessons

6 videos

Prepare for SQL interviews by practicing syntax basics, aggregations, and window functions. Learn how to manipulate data, write complex queries, and analyze information from diverse data sets.

Introduction to SQL and Its HistoryFree

How to Answer SQL Interview Questions

Relationships and Relational Database Concepts

How to Prep SQL Interviews FastFree

SQL Interview PatternsFree

SQL Interview Test QuestionsFree

Joins & Duplicate ControlFree

Window Functions EssentialsFree

Grouping, Having, Conditional Aggregation & NULL-Safe MetricsFree

Subqueries & CTEsFree

Dates & BucketingFree

How to Perform in a SQL Interview Free

Basic SQL Syntax

The WHERE Clause

Logical operators: AND, OR, NOT

Querying Missing Values with IS NULL and IS NOT NULL

Sorting data with ORDER BY

Using LIMIT and OFFSET

IN and BETWEEN

Introduction to SQL Aggregations

GROUP BY and HAVING

Counting with COUNT and COUNT(DISTINCT)

SUM

Calculating Average, Min, and Max with SQL

Conditional values with CASE WHEN ... ELSE

Working with Date and Time: DATE_TRUNC, DATEDIFF, and more

Subqueries and Derived tables

Common Table Expressions (CTEs)

Introduction to Window Functions

Window functions: RANK and DENSE RANK

Window functions: ROW_NUMBER

Window functions: LAG

Introduction to SQL Practice QuestionsFree

Top Earning EmployeesEasy

Monthly Post Success AnalysisFreeEasy

High Volume Low SuccessFreeEasy

Tree NodeEasy

Marketing Campaign DurationFreeEasy

Find Average Purchase ValueFreeEasy

Survey SamplingFreeEasy

Items on SaleEasy

Reddit UsersEasy

Lyft Ride RequestsEasy

E-commerce: Units Ordered Yesterday Easy

E-commerce: Units Ordered Last WeekEasy

E-commerce: Earliest Order by CustomerEasy

Sales by Customer CityMedium

Most Recent TransactionMedium

Calculate Test ScoresMedium

Project BudgetsFreeMedium

Instagram LikesMedium

Employee EarningsMedium

Post Success By InterfaceFreeMedium

Post Success By Age GroupFreeMedium

Find Campaign PurchasesFreeMedium

Find Revenue by DepartmentMedium

Find Customers by DepartmentMedium

Find Second Highest OrderMedium

Find Conversion RatesFreeMedium

Find Customer Lifetime Value (LTV)Medium

Marketing Channel AttributionMedium

Analyze Monthly Customer Transactions

Sales ReportMedium

Monthly Sales ReportMedium

Top Customer by OrdersMedium

TV Show Watch TimeMedium

Nth Ranked PlayerMedium

Number of Direct ReportsMedium

Fraudulent TransactionsMedium

EPA Temperature MonitoringMedium

Video Game MatchmakingMedium

Walmart Inventory StatusMedium

Unique Chat ConversationsMedium

Netflix Genre RatingsFreeMedium

Remove Duplicate EmailsMedium

Consecutive LoginsMedium

E-commerce: Total Orders by CategoryMedium

Total Transaction VolumeFreeHard

Top Salaries by DepartmentFreeHard

Employee HierarchyFreeHard

Post Success After FailureHard

Find Top Customer by YearHard

Find Monthly Revenue GrowthFreeHard

Initial Contact AttributionHard

Ranking Salary DeviationsHard

Game LeaderboardHard

Amazon Order StatusFreeHard

Duolingo LeaderboardsFreeHard

Validate Bitcoin TransactionsHard

E-commerce: Second Earliest OrderFreeHard

SQL Stored Procedures

Software Engineering Coding Questions

15 modules

118 lessons

28 videos

Review fundamental SWE concepts to help you tackle programming problems with confidence. Master the key data structures and algorithms in a variety of real coding questions and expert videos.

Tips for Acing Technical Coding Interviews

Choosing the Right Language for Your Technical Interview

Practice: Move Zeros to End of ArrayFreeEasy

Practice: Remove Duplicates in StringFreeMedium

Practice: Contiguous Subarray SumFreeHard

Bonus: AI-Assisted Coding Round at Meta

How to Prep for a Coding Interview FastFree

Arrays, Two Pointers, Stacks, and Sliding WindowFree

Binary Search, Heaps, and IntervalsFree

Linked Lists, Trees, and TriesFree

Backtracking, Graphs, and DPFree

How to Answer Any Coding Interview QuestionFree

Understanding Big O Notation

Analyzing Time Complexity

Analyzing Space Complexity

Optimizing Your Algorithms

Introduction to Coding PatternsFree

Move Zeros to End of ArrayFreeEasy

Three SumMedium

Merge IntervalsMedium

Group AnagramsMedium

Product of Array Except SelfMedium

Copy a Spiral MatrixMedium

Maximum Subarray SumMedium

Container with Most WaterMedium

Task SchedulerMedium

Trap Rain WaterHard

Contiguous Subarray SumFreeHard

Hash Tables

Maximum ProfitFreeEasy

Difference of ArraysEasy

Smallest Missing IntegerEasy

Find the DuplicatesEasy

K-Messed Array SortMedium

Rotations in Circularly Sorted ArrayMedium

Koko Eating BananasMedium

Find the Peak ElementMedium

Most Common WordsFreeEasy

Valid PalindromeEasy

Validate IP AddressMedium

Decrypt MessageMedium

Minimum Window SubstringMedium

Serialize and Deserialize StringsMedium

Longest Substring Without RepeatMedium

Remove Duplicates in StringFreeMedium

Longest Palindromic SubstringMedium

Graphs

Graph Search

Degrees of FriendshipFreeEasy

Sentence SimilarityMedium

Number of IslandsMedium

Rotting OrangesMedium

Course ScheduleMedium

Edit DistanceHard

Redundant ConnectionMedium

Trees

Balanced TreeMedium

Diameter of a TreeMedium

Validate Binary Search TreeMedium

Construct Binary TreeMedium

Implement TrieMedium

Lowest Common Ancestor of a Binary TreeMedium

Find Largest Smaller BST KeyFreeHard

BST Successor SearchFreeHard

Stacks

Queues

Min StackMedium

Reverse a SentenceEasy

Valid ParenthesesEasy

Daily TemperaturesMedium

Shortest Cell PathMedium

Conversion RatiosHard

Linked Lists

Reverse Linked ListEasy

Linked List CycleEasy

Merge Sort Doubly Linked ListMedium

Merge Linked ListsHard

LRU CacheHard

Heaps

Find Largest NumbersMedium

Buy and Sell StockMedium

Find Median from Data StreamHard

Meta Onsite Coding Round (Kth Largest Element in an Array and Minimum Remove to Make Valid Parentheses)

Recursion

Fibonacci NumbersEasy

Generate ParenthesesMedium

SubsetsMedium

Sales PathMedium

Flatten a DictionaryMedium

Build a CalculatorFreeMedium

PermutationsMedium

Combination SumMedium

Implement Promise.all()Medium

Sudoku SolverHard

Build a Basic Regex ParserHard

Dynamic Programming

Climbing StairsEasy

Prime NumbersFreeMedium

Knapsack ProblemMedium

List the Difference Between Two StringsMedium

Target SumMedium

Coin ChangeMedium

Partition Equal Subset SumMedium

DNA SequenceHard

Unique PathsMedium

Behavioral Interviews: A Practical Guide for Engineers

5 modules

28 lessons

19 videos

10 hours

Get offers at the level you deserve. Prep for senior+ behavioral interviews at FAANG and Tier-1 companies. Made with staff and principal engineers from Meta, Netflix, Google, and more. Avoid downleveling, elevate past projects, and stop sounding like a robot.

Welcome to Behavioral Interviewing for EngineersFree

Introduction to Engineering Behavioral InterviewsFree

Avoiding Downleveling

Approaching the 3 Question Types

Elevating Your Past Projects

Habits of High-Performing Candidates

Be Seen as a Senior Engineer (Part 1: Mock Interview)

Be Seen as a Senior Engineer (Part 2: Analysis)

Why Engineers Fail Interviews

The Question Beneath the Question

Measuring Culture Fit

Demonstrating Impact

Introducing Yourself: Do's and Don'ts

"Why Our Company?"

Prevent Instant Rejection

Know the Rules So You Can Break ThemFree

Types of Interviewers

Sharing the Optimal Level of Detail

Stop Sounding Like a RobotFree

Reversing a Downlevel OfferFree

Be Seen as a Staff+ Engineer (Part 1)

Be Seen as a Staff+ Engineer (Part 2: Analysis)

Do You Meet the Senior+ Bar? (Part 1)

Do You Meet the Senior+ Bar? (Part 2: Analysis)

Meta Onsite Behavioral Round

Demonstrating Ownership (Part 1)

Demonstrating Ownership (Part 2: Analysis)

Practice Behavioral Interviews

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Question database and community answers Get full access to our database of 3,000+ verified interview questions and browse by company, role, or interview stage. Post your answers and get community feedback.

Access all our company interview guides We'll walk you step-by-step through every part of the interview process, from the recruiting phone screen through the final round.

Join our members-only Slack community Connect with your peers in our 25,000-member strong Slack community. Ask questions, practice interviews, and make connections at top tech companies.

Mock interviews with AI and peers Practice real interview questions with unlimited mock interviews, including early access to our new AI interviewer.

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What people like about these courses

Data Engineer Interviews Introduction

Data Modeling Questions

Data Pipeline Design Questions

SQL Interviews

Software Engineering Coding Questions

Behavioral Interviews: A Practical Guide for Engineers

Get these courses, plus everything Exponent has to offer

Data Science Interview Prep

Data Analyst Interview Prep

Software Engineering Interview Prep

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