Top 34

Prep plan

Updated weekly · Last refresh Oct 16

Pattern Data Engineer Interview Questions

The questions to prepare for a Pattern Data Engineer interview. Questions from real interview reports rank first. Updated daily.

34questions

~5htotal time

Track your progressSign up free to work through all 34 questions and resume where you left off.

Start practicing free →

SQL & Data ManipulationStart here. 11 questions + 3 drills · ~118 min

Star vs Snowflake for Sales AnalyticsMedium

Compare star and snowflake schemas for warehouse design, including trade-offs in normalization, query simplicity, and analytics performance.

JoinsData WranglingGroup By

Pattern

SQL and Big Data ExperienceMedium

Evaluates your depth of experience with SQL and large-scale data engineering work.

sql

Pattern

Slowly Changing Dimensions ApproachMedium

Tests your understanding of SCD design choices and how they affect analytics over time.

slowly changing dimensionsData Modeling

Pattern

Handle Nulls in Large JoinsMedium

Practice

Practice drill

Write a PostgreSQL join that preserves all orders and clearly classifies NULL and unmatched customer keys.

null handlinglarge datasetsJoins

Pattern

Swiggy

Quantiphi

Rolling 30-Day Sales VolumeMedium

Practice

Practice drill

Calculate each product's daily sales and rolling 30-day sales volume using PostgreSQL date-based aggregation.

Window FunctionsDate FunctionsData Manipulation

Pattern

Detect Duplicate Customer RecordsMedium

Practice

Practice drill

Identify duplicate customer records within each Pattern ecommerce partner using normalized email addresses.

deduplicationdata cleaningdata accuracy

Pattern

More SQL & Data Manipulation questions with a free account

Pipelines15 questions · ~120 min

Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQuality

Pattern

PySpark vs Hadoop ArchitectureMedium

Assesses your ability to compare distributed processing approaches and make pragmatic technology choices.

pysparkhadoop

Pattern

Warehouses, Kafka, and AirflowMedium

Evaluates your experience integrating core data platform components into end-to-end pipelines.

kafkaairflow

Pattern

More Pipelines questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan

Behavioral & Leadership7 questions · ~56 min

Prioritizing Competing Urgent RequestsMedium

Tests prioritization under pressure, stakeholder management, and decision-making when urgent analytical requests compete.

cross-functionalStakeholder ManagementPrioritization

Pattern

More Behavioral & Leadership questions with a free account