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."
Navigate reschedules, offers, and team-match uncertainty
Behavioral + Due Diligence + Risk Management (Data Scientist — Onsite) Context You are a Data Scientist candidate approaching an onsite. You are juggl...
Describe cross-team collaboration approach
Cross-Functional Collaboration, Cadence, Artifacts, and Conflict Resolution Context: You are interviewing for a Data Scientist role in a consumer mark...
Model waiting-time abandonment via survival
Survival Modeling of Rider Abandonment During Pickup Waits Context You are modeling when a rider cancels (abandons) while waiting for pickup. Let time...
Design experiment on culture memo emphasis
This question evaluates competency in experimental design and statistical analysis for product metrics, covering hypothesis specification, randomizati...
Demonstrate JD skills with quantified outcomes
Data Scientist HR Screen: Map a JD Skill to Your Resume Project Pick one skill explicitly highlighted in the job description and one project from your...
Describe handling pressure and stakeholder conflicts
Behavioral/Scenario Questions for a Data Scientist — Technical Screen Answer concisely using STAR (Situation, Task, Action, Result) where relevant. 1....
Decide and justify product metrics amid trade-offs
Smart Sort Feed Ranking: Metrics, Experiment, Decisions, and Monitoring Context: You are introducing a new Smart Sort ranking for a content feed. It s...
Design an ad-selection system across objectives
End-to-End Ad-Selection System Design Context You must choose, at impression time, which advertiser type to show to a user. There are three advertiser...
Design an operations dashboard with justifications
Design an Operations Dashboard for Same-Day Delivery Station Performance Goal Create a real-time dashboard for a delivery-station manager to monitor a...
Prioritize projects and manage tight deadlines
Q4 Planning Scenario: Prioritization, Scope, and Stakeholder Leadership You are the sole data lead for Q4 supporting three initiatives with fixed spon...
Demonstrate Leadership in Ambiguous Analytics Projects
Behavioral & Leadership: End-to-End Analytics Project Under Ambiguity and Time Pressure Context You are a Data Scientist interviewing for a technical ...
Derive uniform RNGs from limited or biased sources
Sampling Construction and Analysis: From rand5() to rand7(), General randM()→randN(), and Fairness from a Biased Source You have access to a uniform p...
Design and analyze an SBA mini case experiment
Design a 2‑Week Experiment: $100 Credit After ID Verification You are designing a 2‑week pilot in which new accounts receive a $100 credit after ident...
Evaluate concession gift-card policy with DID
Evaluate a Gift-Card Concession Pilot (Causal Impact with Staggered Adoption) Context Several regions piloted a policy: when a shipment is lost or dam...
Choose tests and solve distribution parameters
Engagement Comparison: New vs Existing Users (2025-08-05 → 2025-09-01) Context: You have per-user daily session counts (integer, skewed, many zeros) f...
Design a target‑user prediction system
Predicting 30‑Day Adoption of Product P for Budgeted Outreach Context You are tasked with building a model to prioritize user outreach for Product P. ...
Scope an open‑ended take‑home under constraints
Take‑Home Planning Prompt: Predict Target Users in 6 Hours Context You have a 6‑hour take‑home assignment to plan how you would predict a product’s ta...
Navigate an ambiguous take-home assessment
Behavioral Case: Executing a 4–6 Hour Take‑Home Data Science Assignment Context You are a candidate for a Data Scientist role. You receive a one‑week ...
Derive and validate DID for staggered rollout
Causal Effect of a Staggered Adoption Policy Across EU Regions You cannot randomize. An intervention is rolled out at different dates across EU region...
Design a restaurant recommender under constraints
This question evaluates a candidate's competency in designing scalable machine learning recommender systems, covering retrieval and ranking architectu...