Real-Time POS Pipeline with Snowpipe and MERGE

A medium Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain

Pipeline Design

Difficulty

medium

Seniority

senior

Interview Prompt

We're a retail chain with 600 stores and a Snowflake data warehouse. Our POS terminals generate sales transactions in real time but right now they batch-upload to S3 at end of day, which means the operations team can't see intraday sales. Design a pipeline that gets POS data into Snowflake with low latency, while correctly merging with the historical data already in the warehouse.

How This Interview Works

1. Read the vague prompt (just like a real interview)
2. Ask clarifying questions to the AI interviewer
3. Write your pipeline design solution with real code execution
4. Get instant feedback and a hire/no-hire decision