Data Engineer System Design Interview Questions
Practice 29 real System Design interview questions for Data Engineer roles. From companies including Meta, Jain Global, Disney, Figureai, xAI.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Design an Incremental Rolling-Metrics Data Pipeline
Design an Incremental Rolling-Metrics Data Pipeline Design a production pipeline that computes rolling-window metrics for approximately 1,000 tickers ...
Model Effective-Dated Compliance Restrictions for Securities
Model Effective-Dated Compliance Restrictions for Securities Design a relational system that maps compliance restrictions to every affected security. ...
Design and Debug a Point-in-Time Backtest Data Pipeline
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Build a One-Pass Data Cleaning Pipeline
This question evaluates a candidate's competence in large-scale data engineering and system design, covering memory-bounded streaming IO, explainable ...
Design a Conversation Log Ingestion Pipeline
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Design a Data Pipeline for Messy Pod Alerts and Bad Pod Detection
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Choose Between Batch and Streaming for a Data Pipeline
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Design a GPU Telemetry Collection and Analytics Platform
Design a platform that collects GPU telemetry from a large compute environment and exposes both high-level trend analytics and low-level drilldowns. T...
Design Data Quality and Observability Pipeline
Design a production data orchestration, data quality, and observability framework for batch and streaming data pipelines. Your design should address: ...
Design teleoperations data models and pipelines
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Design Video Call Analytics Tables
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Design a Telemetry Platform Ingesting Two Gigabytes per Second
Design a robotics telemetry platform handling two gigabytes of raw events per second. Reason through capacity, edge buffering, durable ingestion, repl...
Design a clickstream ingestion and aggregation pipeline for billions of events per day
Design a clickstream ingestion and aggregation pipeline for billions of events per day You are designing the data platform for a large consumer stream...
Evaluate credit-limit increase profitability
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Design KPI dashboard tables: retention, weekly rollups, timezone
Question You are designing the analytical data model behind a fast KPI dashboard for a large-scale photo-sharing app. The dashboard is reported daily ...
Design batch and streaming ETL architecture
Design batch and streaming ETL architecture System Design: End-to-End Data Platform for Product Analytics (Batch + Near-Real-Time) Context Design a sc...
Design an event analytics platform
This question evaluates a candidate's skills in data engineering and system design for event analytics, covering platform architecture, data ingestion...
Defend a Data Pipeline Architecture and Its Trade-offs
Prompt Choose one production data pipeline that you personally designed or substantially changed. Walk through its architecture, the requirements that...
Design a schema for server engagement
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Define metrics and data model for product features
This question evaluates a candidate's product sense and data engineering competency, including defining core success metrics, designing dashboard visu...