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."
Estimate laptops in an office
Give a back-of-the-envelope estimate for how many laptops are physically present in a typical corporate office at a given moment. State your assumptio...
Evaluating and launching Instagram Stories
Evaluating and Launching Instagram Stories You are evaluating the rollout and impact of Stories, an ephemeral sharing format similar to Snapchat, acro...
Measure Success of New B2B Product
Measuring Success of a New LinkedIn B2B Product A new LinkedIn B2B product has launched. Leadership wants to understand whether it adds value and what...
Improve Profile Completion Rate
Increasing LinkedIn Profile Completion Profile completeness affects members' visibility in search, job matches, recruiter outreach, and trust. Assume ...
Design A/B Test to Isolate Product Usage Drop Causes
Investigating a Product Usage Drop with Experiments You observe that product usage fell by 10 percent in the U.S. and 11 percent in Mexico over the sa...
Build Classifier: Evaluate with AUROC for Imbalanced Data
Detecting Dead Links: Build and Evaluate a Classifier You have a dataset of 1,000 URLs labeled as good, meaning alive, or bad, meaning dead. The class...
Resolve Stakeholder Conflicts: Actions and Outcomes Explained
Behavioral Interview: Navigating Stakeholder Conflict You are a Data Scientist delivering a product or experiment with stakeholders such as Product, E...
Design Experiments to Evaluate Courier Initiatives Effectively
Experiments for Courier Marketplace Initiatives You operate a two-sided delivery marketplace with independent couriers. The team must evaluate three c...
Build Model to Predict Customer Contract Renewal
Build a Model to Predict Customer Contract Renewal You are designing a model to predict whether an enterprise customer will renew a Google Meet contra...
Diagnose YouTube Usage Decline: Key Metrics and Segmentation
Diagnose YouTube Usage Decline: Key Metrics and Segmentation YouTube observes a sudden decline in daily active users and total watch time across the p...
Identify Challenges and Solutions for Bike-Delivery Program
Identify Challenges and Solutions for a Bike-Delivery Program A food-delivery platform is considering a bike-based delivery option for couriers in sel...
Measure Causal Impact of Self-Selected App Redesign
Measure Causal Impact of a Self-Selected App Redesign A mobile app ships a redesigned UI as a new version. Users opt in by upgrading, so a standard ra...
Diagnose Job Application Decline: Funnel Analysis and Segmentation
Diagnose a Sharp Decline in Job Applications LinkedIn sees a sudden, sharp decline in its Job Application metric, defined broadly as completed job app...
Evaluate Factors Before Renewing TV-Series Contracts
TV-Series Renewal and Divestiture Analysis You are advising a CEO on whether to renew a two-year contract for two TV series: - The Analyst (Series A) ...
Design object model for an elevator system
Design the object-oriented model for an elevator (lift) system in a multi-floor building that may have multiple elevators. The system should support: ...
Implement bus route simulation features
Bus Route Simulation – Boarding, Capacity, and Priority Passes You are given a partially implemented codebase for simulating bus routes in a city. Bus...
Design a URL Shortener
This question evaluates a candidate's ability to design scalable, highly available distributed systems, covering competencies in API design, data mode...
Determine Safe Bomb Defusal
This question evaluates competency in graph traversal, state-space search, reachability analysis, and handling safety constraints within finite state ...
Implement Byte Formatting and Cafeteria Billing
This question evaluates precision in numeric formatting and unit conversion for byte sizes, along with stateful simulation of capacity-constrained eve...
Choose a Safe Polling Strategy for Delayed Records
Choose a Safe Polling Strategy for Delayed Records Data store A emits one record every 30 seconds. A is a black box. Each record eventually appears in...