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."
Evaluate new shop-ads ranking algorithm
This question evaluates a data scientist's skills in online experimentation, causal inference, and marketplace analytics—covering A/B test design, ran...
Compute pirated-theme usage and revenue loss
This question evaluates SQL data manipulation and time-series analytics skills, focusing on interval overlap logic, aggregation of distinct entities, ...
Describe projects and handle challenges
Describe projects and handle challenges Behavioral Interview Prompts — Software Engineer (Onsite) Context: In an onsite behavioral interview for a Sof...
Apply Range Overwrite Queries
You are given an integer array nums of length n and a list of range-assignment queries. Each query is a tuple (left, right, value), where left and rig...
Design an online chess platform
Design an online chess platform. Requirements: - User matchmaking (ranked/unranked). - Real-time gameplay with low latency moves. - Enforce game rules...
Design real-time live comments
Design a real-time comment system for live video (e.g., Facebook Live comments). Requirements: - Viewers post comments; all viewers see new comments q...
Design a nearby places (proximity) service
Design a proximity search service like Yelp/Google Maps. Requirements: - Store places with (place_id, name, lat/lng, category, rating). - Query: “find...
Design a ticket or hotel reservation system
Design a reservation system (Ticketmaster-style event seats or hotel rooms). Requirements: - Users search availability by date/event. - Users select s...
Write pseudocode for a ReAct-style loop
Coding prompt (pseudocode) Write pseudocode (does not need to compile) for a ReAct-style agent loop that alternates between reasoning and actions. Req...
Design an experiment for pricing page redesign
A product team is redesigning a pricing tier page. Historically the page only offered a monthly plan; the redesign adds an annual plan option. You are...
Design a max-stack with efficient operations
Design a max-stack with efficient operations Design a stack that supports push (x), pop(), top(), peekMax(), and popMax(). The popMax operation must r...
Implement a Spreadsheet With Formulas
This question evaluates understanding of data structures and algorithms for dependency management, expression parsing and evaluation, and detection of...
Introduce yourself and discuss resume details
Behavioral Interview Prompt: Self-Introduction, Resume Walkthrough, Project Deep Dives, Collaboration, and Questions What to Deliver - Self-introducti...
Describe product usage, feedback, and music experience
Behavioral: Product Usage, Feedback, and Music Background Context You are interviewing for a Software Engineer role at a music-tech company. Assume th...
Cover intro, projects, interest, goals, Go rating
Behavioral & Leadership Technical Screen — Software Engineer (Postman) Context: You are interviewing for a Software Engineer role in a technical scree...
Schedule instructions on a VLIW pipeline
VLIW Instruction Scheduling and Software Pipelining You are given a 4-issue VLIW machine with these functional units and latencies: - 2 ALUs (ALU late...
Walk through a recent project design
System Design: End-to-End Project Walkthrough Provide a structured walkthrough of a recent project you led end-to-end. Organize your answer using the ...
Describe your proudest project
Behavioral prompt: Describe the project you are most proud of (Machine Learning Engineer) Provide a concise, technical, leadership-focused walkthrough...
Develop test plan and TDD for word search
Design a Comprehensive Test Plan and TDD Workflow for Word-Search Functions Context and Assumptions We are testing two grid-based word search function...
Find top-k frequent elements efficiently
Given an array (or stream) of integers and an integer k, return any ordering of the k most frequent values. Implement a solution using a heap and disc...