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."
Predict Customer Churn with Machine Learning Workflow
Predict Monthly Customer Churn With an End-to-End ML Workflow A subscription platform wants to predict whether a customer will churn in the next month...
Calculate Expected Meetings in Randomly Assigned Rooms
Expected Meetings in Randomly Assigned Rooms You are solving two probability questions about room occupancy. Constraints & Assumptions - In the first ...
Calculate Expected Impressions and Probability for Users
Expected Impressions From Random Ad Allocation There are X distinct users and Y ad impressions. Each impression is assigned independently and uniforml...
Build Predictive Model for Buyer Engagement Uplift
Predict Engagement Uplift for a New "Show Similar Products" Button A new "Show similar products" button may change buyer engagement. You need to build...
How would you evaluate upranking shop ads?
This question evaluates a candidate's competency in ad-ranking intervention evaluation, causal inference and experimentation design, metric definition...
Describe a complex problem you solved
Behavioral questions 1. Complex problem: Tell me about a time you worked on a complex technical problem. - What made it complex (scale, ambiguity, ...
Implement Plurality and Runoff Voting
You are given a list of ballots for an election. Each ballot is an ordered list of distinct candidate names, from highest preference to lowest prefere...
Design and Test a New Feature
You are interviewing for a Data Scientist internship at Uber. Assume the Uber rider app already includes standard functionality such as booking a ride...
Check if a word exists in a grid
Given an m×n grid of characters and a string word, determine whether the word can be formed by sequentially adjacent cells (adjacent means horizontall...
Answer learning and challenge behavioral prompts
Behavioral prompts Prepare structured answers (with follow-ups) for the following: 1) Learning something new - Tell me about a time you had to learn s...
Remove nodes with a given value
This question evaluates proficiency in singly linked list manipulation, specifically pointer handling and in-place node removal, and falls under the C...
Solve four OA string/array/matrix/graph tasks
This multi-part prompt evaluates proficiency in core programming competencies: string parsing and character classification, simulation/greedy processi...
Compute max planes shot and session count
Problem 1: Max planes you can shoot before any lands You are given two equal-length arrays: - altitude[i]: the initial altitude of plane i (positive i...
Design an image copyright-violation detection system
This question evaluates competency in designing scalable machine learning systems for image copyright detection, testing knowledge across computer vis...
Solve frequency and tree-completeness problems
These two problems evaluate competency in frequency counting and selection algorithms for identifying top-k elements and in binary tree structure anal...
Implement an in-memory storage with TTL and scans
This question evaluates implementation of an in-memory two-level key->field->value store with TTL semantics, lexicographic scans and prefix filtering,...
Solve 12 coding interview problems
Below are multiple independent coding problems. --- Problem 1: Reduce an integer to 0 with \(\pm 2^i\) You are given a positive integer \(n\). In one ...
Compute BBO and NBBO from order data
You are given a list data of order records. Each record is a 4-tuple: ` (exchange_id, price, quantity, order_type) ` - exchange_id: string/int identif...
Design a data structure to store anagrams
This question evaluates proficiency in data structures and algorithms for string grouping and lookup, testing skills in string manipulation, canonical...
Design a KV store with transactions
System Design Prompt Design an in-memory/disk-backed key-value store that supports transactions. Functional requirements - Basic operations: Get(key),...