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."
Train and improve a scikit-learn binary classifier
Evaluates the ability to train, evaluate, and iteratively improve a scikit-learn binary classifier, encompassing model selection, preprocessing, valid...
Determine if a string can be segmented
Given a string s and a list of strings wordDict, determine whether s can be segmented into a sequence of one or more dictionary words. - You may reuse...
Implement string-based rounding without floats
Coding You are not allowed to parse the input into a built-in floating type (to avoid overflow and precision issues). Work directly on strings. 1) Imp...
Choose K pickup locations minimizing L1 distance
Coding: K Shuttle Pickup Locations (L1) You are given the coordinates of N people on a 2D grid. You want to open K shuttle pickup locations (pickup po...
Validate an extended tic-tac-toe state
Problem You are given a 3×3 tic-tac-toe board state as an array of 3 strings, each of length 3. Each cell is one of: - 'X' (player X) - 'O' (player O)...
Discuss languages, packages, and tools you know
Skills and tooling question What languages, libraries/packages, and developer tools are you most comfortable with? In your answer, cover: - Primary la...
Describe Past Project And Debugging Approach
Describe Past Project And Debugging Approach Behavioral + Technical Leadership: End-to-End Project and Production Bug Provide a recent, specific examp...
Solve interval deletion and GCD subarray problems
This Amazon online assessment contains two independent algorithm problems. For each, return the requested value, describe an efficient algorithm, and ...
Explain deadlines, going beyond, and persuasion
Explain deadlines, going beyond, and persuasion Behavioral Prompt: Delivery Under Pressure, Exceeding Expectations, and Influencing Stakeholders Conte...
Simulate return-weighted rebalancing strategy
Simulate return-weighted rebalancing strategy Problem: Momentum-weighted daily log-return statistics You have N assets with end-of-day prices over T t...
Describe end-to-end design of past project
Describe end-to-end design of past project System Design Deep Dive: Past Project End-to-End Provide a detailed, end-to-end walkthrough of a significan...
Explain Redis design, persistence, and scaling
Explain Redis design, persistence, and scaling Redis: Data Structures, Persistence, Eviction, High Availability, and Operational Pitfalls Context: You...
Explain your background and career choices
Explain your background and career choices Behavioral Technical Screen: Resume Walkthrough and Career Narrative Context You will be asked to present a...
Implement a serializable key-value store
Implement in C++ an in-memory key-value store with: - put(key: string, value: string), get(key) -> optional<string>, erase(key). - serialize() -> vect...
Design an e-commerce category page
Design an e-commerce category page System Design: Category Page with Facets, Sorting, Pagination, SEO, Caching, Personalization, and Real-Time Updates...
Discuss achievements, ambiguity handling, growth, and conflict management
Discuss achievements, ambiguity handling, growth, and conflict management Behavioral & Leadership Interview Prompts (Software Engineer — Onsite) Conte...
Explain attention and Transformers
Explain attention and Transformers Scaled Dot-Product Self-Attention, Transformer Architecture, and BERT vs GPT You are interviewing for a software en...
Deep dive a resume project
Deep dive a resume project End-to-End ML Project Walkthrough (System Design Focus) Pick one ML project from your experience and walk through it end-to...
Can a Car Meet a Truck?
This question evaluates a candidate's ability to reason about grid-based movement and time-indexed reachability, testing competencies in algorithmic a...
Interpreting confidence intervals to choose a treatment
Feed-ranking Tweaks: Interpret Confidence Intervals and Choose a Treatment You ran online experiments for three feed-ranking tweaks. The primary metri...