Lead Data Engineering Interview Questions (With Answers)

6 Questions asked

Mar 2026 First seen

Apr 2026 Last seen

6 Unique questions

🥧 Difficulty mix

How hard are these questions?

Medium 2 (33%)Hard 4 (67%)

📊 Question type

Breakdown by interview phase

🔥 12-week activity

When candidates are asked these

Last 12 weeks →

🏷️ Top topics

Where these questions cluster

Devops 2

Pyspark 1

Dataframes 1

Aggregation 1

Pipelines 1

Databricks 1

Data Formats 1

Error Handling 1

👤 Experience level mix

What seniority these are asked at

Junior (1-3yr) 1Mid (3-6yr) 1Senior (6+yr) 4

📝 Recent questions

Latest 10 asked by candidates

🟡 Medium ✅

Give PySpark code to calculate the friend acceptance rate for each date when friend requests were sent. A request is sent if action = 'sent' and accepted if action = 'accepted'. If a request is not accepted, there is no record of it being accepted in the table. The output should only include dates where requests were sent and at least one of them was accepted (acceptance can occur on any date after the request is sent).

Pyspark Dataframes Aggregation

Coding · Asked 1× · Apr 2026

🔴 Hard ✅

How do you develop pipelines in application in data engine projects, develop pipelines, deploy them at the end, and make them move into production?

Pipelines Devops Devops

System Design · Asked 1× · Mar 2026

🟡 Medium ✅

What file format did you use in Databricks?

Databricks Data Formats

Conceptual · Asked 1× · Mar 2026

🔴 Hard ✅

Can you help me understand, have you ever made a mistake in your work? How did you handle it, and what did you learn from it?

Error Handling Personal Growth

Behavioral · Asked 1× · Mar 2026

🔴 Hard ✅

Write a SQL query to select the top 10 users by order count.

Sql Query Optimization

Coding · Asked 1× · Mar 2026

🔴 Hard ✅

Can you design and implement a system that can extract data from APIs and load it into an S3 bucket or a posted location, given that you have to deal with complex and large data volumes from various API systems, including social media and other API systems?

Api Integration Data Warehousing

System Design · Asked 1× · Mar 2026

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