Data Engineer Software Engineering Fundamentals Interview Questions
Practice 12 real Software Engineering Fundamentals interview questions for Data Engineer roles. From companies including Zoox, Akuna Capital, Bloomberg, Jain Global, Netflix.
"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."
Build a Self-Service Market Data Discovery and Support Layer
Build a Self-Service Market Data Discovery and Support Layer An analyst asks where to find Bloomberg company identifiers and the associated figures ne...
Build a Transaction CSV Cleaning Pipeline
This question evaluates skills in data engineering and software engineering fundamentals, focusing on designing deterministic, auditable batch ETL/cle...
Use AI Responsibly During SQL Pair Programming
Prompt The reported pair-programming round included several SQL exercises and explicitly evaluated both collaboration and the candidate's use of AI. T...
Write February Resource Usage Query
This question evaluates SQL competency in aggregation, group-level filtering, time-range handling for DATE/TIMESTAMP values, and combining results fro...
Data Pipeline Reliability, Backfills, and Spark Optimization
You are interviewing for a senior data engineering role on an analytics and observability team. The interviewer asks a sequence of practical questions...
Explain Spark Execution and Optimization
You are interviewing for a Data Engineer role. In a 30-minute discussion on production data engineering, the interviewer probes how well you understan...
Explain seasons and compound interest
Answer the following basic reasoning questions: 1. Why is summer generally hotter than winter? 2. Suppose you invest $1,000 at a 100% annual interest ...
Design Transaction Data Quality Checks
You own data quality for the same credit-card transaction dataset. transactions | column | type | description | |---|---|---| | transaction_id | integ...
Write SQL to analyze CA residency history
You have two SQL tables. Table 1: user_info (current snapshot) - id (user id) - shard (partition column) - name - country - state - created_date Table...
Explain concurrency and reliability tradeoffs
This question evaluates skills in concurrent programming (thread-safety, synchronization primitives, memory visibility and lazy initialization) and di...
Implement RotatingFileSink in hierarchy
You are given an existing Python 3.10 codebase with an abstract base class RecordSink (from abc import ABC, abstractmethod) that defines open() -> Non...
Compare Data Infrastructure Storage Choices
You are designing data infrastructure for an autonomous-driving company. Discuss the following storage and processing concepts and trade-offs: 1. In P...