Machine Learning Engineer + Data Scientist + Software Engineer Interview Questions
Practice the exact questions companies are asking right now.
"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 a Double Descent Experiment
This question evaluates understanding of sample-wise double descent, experimental design for reproducible supervised-learning studies, and theoretical...
Discuss Production Recovery, Mentoring, Challenge, AI, and Conflict
Discuss Production Recovery, Mentoring, Challenge, AI, and Conflict Prepare concise, evidence-based answers to the following operational and hiring-ma...
Design an LLM-Based Conversational Assistant (Chatbot)
This question evaluates the ability to design an end-to-end LLM-based conversational assistant, covering pretraining, alignment, retrieval, and servin...
Rate Engineering Work Simulation Responses
This question evaluates situational judgment and behavioral leadership competencies in a software engineering context, focusing on ownership, communic...
Answer a Ramp Engineering Video Interview
Prepare answers for a Ramp engineering video interview that asks: introduce yourself and why Ramp; describe how you learned a new technology; explain ...
Explain Why This Company and Role Interest You
Explain Why This Company and Role Interest You Why are you interested in this company, and why is this software engineering role the right next step f...
Trees and Binary Search Trees: Taxonomy, Invariant, and Traversal/Search
This question evaluates a candidate's grasp of tree data structures and the binary search tree ordering invariant, along with the ability to implement...
Design a Reliable Job Scheduler
Design a Reliable Job Scheduler Design a service that accepts jobs to run at specified times and dispatches them to workers. The system should continu...
Design Instagram (Feed, Photos, and Friend Recommendations)
This question evaluates a candidate's ability to design a large-scale, read-heavy social media backend, covering data modeling for follow graphs, medi...
Design a Chat Application with a Partitioned Cache
Design a Chat Application with a Partitioned Cache Design an end-to-end chat application that supports direct conversations and small group conversati...
Find Company Tickers Mentioned in a News Headline
Find Company Tickers Mentioned in a News Headline Problem Implement findMentionedTickers(companyNames, tickers, headline). companyNames[i] maps to tic...
Explain KV cache in Transformer inference
Question In Transformer-based large-language-model inference, what is a key-value (KV) cache? Give a complete, systems-level explanation that covers: ...
Analyze Temperatures and Update Regression
You are given historical daily temperature data for New York City and several nearby towns. Each row contains a date, the NYC temperature, and the tem...
Improve Keyword Search Ranking
This question evaluates an ML engineer's search system design competency, including information retrieval and ranking principles, feature and model se...
Design a Scalable News Feed
Design a Scalable News Feed Scenario Design the home-feed system for a social product. Users publish posts, follow other accounts, and request a pagin...
High Availability and Failover for a Primary-Replica Database
This question evaluates a candidate's understanding of database high-availability design, including replication semantics, failure detection, and fail...
Explain Why You Want an Analytics Role at Airbnb
Why are you looking for a new opportunity, and why are you interested in an analytics role at Airbnb? Build a concise recruiter-screen answer that con...
Defend the Technical Details of a Project
Defend the Technical Details of a Project Give a focused technical deep dive into one project you know well. Explain the problem, architecture, diffic...
Solve estimation and probability brainteasers
This is a set of independent estimation and probability brainteasers of the kind asked rapid-fire from a slide deck. Treat each one separately. For ev...
Design a Slack-Like Messaging System
Design a Slack-like team messaging system focused on sending and receiving messages in real time. Your design should support workspaces with channels ...