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 content moderation for a posting app
This question evaluates a candidate's ability to design content-moderation features, covering competencies in scalable system design, API and data mod...
Describe an inclusive action you took
Inclusive culture behavioral question Your company strongly values an inclusive (inclusive culture) workplace. Prompt: Describe a time you took a conc...
Find first and last occurrence in sorted array
This question evaluates proficiency in array search algorithms and algorithmic reasoning, specifically the use of binary search techniques and careful...
Implement a versioned hash map with snapshot
VersionedHashMap (time-travel key-value store) Design and implement a data structure VersionedHashMap<K, V> backed by a hash map that supports retriev...
Answer two coding questions (SQL and DP)
This multi-part question evaluates SQL query skills (handling distinct values, aggregation and edge-case NULL results) and algorithmic proficiency in ...
Maximize sum with no adjacent elements
Given an array of non-negative integers nums, choose a subset of elements such that no two chosen elements are adjacent in the original array. Return ...
Design a hybrid-cloud GPU allocation service
System Design: Hybrid-Cloud GPU Resource Allocation & Job Management Design a service that allocates and manages GPU resources for ML training jobs in...
Find maximum collinear points
This question evaluates understanding of planar geometry and algorithmic reasoning for identifying collinearity, including handling duplicate points a...
Explain key React concepts and error handling
This question evaluates competency in React fundamentals, including understanding of the Virtual DOM, Hooks usage, React 18 concurrent features, serve...
Design a news aggregator like Google News
This question evaluates a candidate's competency in designing scalable, low-latency distributed systems for content aggregation, personalization, and ...
Lead a High-Leverage Project in a Regulated Legacy System
Lead a High-Leverage Project in a Regulated Legacy System Prepare a senior-level project deep dive. The project should have meaningful business impact...
Explain an AI-Assisted Engineering Workflow You Can Defend
Explain an AI-Assisted Engineering Workflow You Can Defend Choose a recent engineering project that you personally worked on. Use it to explain the fu...
Build a Trust-Aware BIN Database
Build a Trust-Aware BIN Database Implement process_bin_operations(operations) for an in-memory database of card-number prefixes. A prefix identifies a...
Solve Two Backtracking Array Problems
You will solve two independent coding problems. For each problem, first discuss edge cases, then implement a correct solution, and finally explain how...
Compute a Seven-Day Rolling Average
You are analyzing daily product metrics for the Fetch mobile app. Table daily_metric_values | Column | Type | Description | |---|---:|---| | metric_da...
How would you target promotions to grow consumers?
ML / Growth Scenario You own a system that sends promotion offers (e.g., "$10 off", "free delivery") to consumers to increase growth. Prompt Design an...
Design a large-scale news app with caching
Scenario Design a simplified news app (mobile + web) for a very large user base. Users can: - open the app and see a personalized news feed - open an ...
Answer behavioral questions using STAR
bp Data Scientist Behavioral Questions Using STAR You are interviewing at bp for a Data Scientist role. Prepare structured, evidence-based answers usi...
Design Real-Time Auctions for Social Posts
Design a real-time auction feature for a large social photo and video app. A creator can attach an auction to a post. Viewers can place bids, and ever...
How to maximize rewards with exactly k tasks
You are assigning n independent tasks to two interns. - Each task must be done by exactly one intern. - If intern 1 does task i, you earn reward1[i] p...