Confluent Interview Questions
Practice 22 real interview questions from Confluent. Covers Coding & Algorithms, System Design, Software Engineering Fundamentals, Analytics & Experimentation. For roles including Software Engineer, Data Scientist.
"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 RSS News Feed Service
Design an RSS news feed service. The service lets users subscribe to RSS sources, ingests articles from those sources on a schedule, stores article me...
Design a temporary email service
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Design a News Feed and Mail Service
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Implement tail -n for a Very Large File
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Design RSS Feed and Temporary Mail
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Implement tail N lines
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Search Words and Phrases in a Large Line-Oriented File
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Design a Reliable URL Shortening Service
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Explain Linux Command Execution, Filesystems, and Isolation
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Design a distributed key-value store at scale
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Explain algorithm strategies and complexity
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Design an LRU Cache with a Constant-Time Average
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Answer standard behavioral prompts
Behavioral & Leadership Prompts (Technical Screen — Software Engineer) Context: You will be asked to answer standard behavioral prompts. Aim for conci...
Process pod logs with global increments and pop-min
This question evaluates understanding of data structures—particularly priority queues/heaps—and techniques for efficiently handling global/bulk update...
Explain variadic functions
Explain variadic functions Variadic Functions in Two Languages + Typesafe Variadic Logger Context Variadic functions accept a variable number of argum...
Evaluate Metrics and Randomization for Onboarding Tutorial Change
Evaluate Metrics and Randomization for Onboarding Tutorial Change Scenario A single step within Confluent’s multi-step user-onboarding tutorial was mo...
Implement File Tail and Sensor Health
This question evaluates skills in large-file streaming and buffer/pointer manipulation for tailing files, along with data-structure and time-window re...
Rank songs by pairwise user preferences
You are given preference rankings for n users over m songs. Each song is labeled from 0 to m - 1. For each user i (0-indexed), you are given an array ...
Implement Tail and Find Monster Cost
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Solve Signature, File, and Queue Problems
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