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 a Multi-Tenant Online IDE
This question evaluates system design skills for multi-tenant platform architecture, specifically assessing competency in tenancy isolation, identity ...
Design employee and company classes with tests
This question evaluates object-oriented design, API modeling, and unit testing competencies by requiring an Employee and Company model, CRUD operation...
Schedule batched register operations optimally
Problem You are given a text file that describes batches of register operations (reads and writes) on integer-indexed registers. Your task is to sched...
Design a game genre classifier
This question evaluates system design and machine learning competencies, including multi-modal modeling (text, images, tabular), data and label qualit...
Return all root-to-leaf tree paths
Given the root of a binary tree, return all root-to-leaf paths. - A leaf is a node with no children. - A path should be represented as a string with n...
Solve linked list, tree, and grid problems
Problem A — Find cycle entry in a singly linked list You are given the head of a singly linked list. The list may contain a cycle. - Return the node w...
Design a restaurant recommendation system
Question Design a restaurant recommendation system for a food delivery marketplace such as Uber Eats. When a user opens the home page, the system shou...
Explain what torch.distributed.barrier does
Question In PyTorch distributed training, what does torch.distributed.barrier() do? Follow-ups - Give an example of when you would use it. - What are ...
Design a user activity query system
This question evaluates a candidate's system design skills, including scalable data modeling, time-and-geo indexing, API design, storage and serving a...
Describe mentorship, conflict, and project impact
Behavioral questions discussed in the interview included topics like: - Walk through a project you worked on end-to-end. What was the goal, what trade...
Describe proudest project and cross-team work
Behavioral prompts included: 1. Describe the project you are most proud of. 2. Describe a time you worked across teams to deliver a result. For each, ...
Build AI chat for spreadsheets
Design an AI chat interface for the spreadsheet product. A user can type natural-language commands such as: - "Sum all values in column K and write th...
Design Identity-Trust A/B Test
You are interviewing for a Data Scientist role on an Identity & Trust team at a consumer product company. The team wants to launch a feature that stre...
How would you support ML stakeholders?
You are an ML infrastructure engineer working closely with a data scientist stakeholder. Discuss how you would handle the following situations in a pr...
Respond to long-term concerns after A/B success
Your model performs well in an A/B test (statistically significant lift on the primary metric). However, your manager believes the model may harm long...
Find shared courses between student pairs
This problem set evaluates data structures and algorithms competencies, covering mapping and set intersection for pairwise course overlap, permutation...
Introduce yourself and explain your project
Behavioral questions 1. Introduce yourself (education/background, current role, what you focus on). 2. Where are you from? (brief personal background ...
How would you test a bike delivery option?
This question evaluates experimental design, causal inference, metrics definition, and marketplace analytics competencies in the context of launching ...
Describe projects, conflicts, and tough stakeholders
Manager (HM) behavioral interview prompt You have a 30–45 minute hiring-manager conversation. Expect a discussion centered on your recent work plus a ...
Design video captioning under compute limits
Scenario You work on a multimodal team at a large short-video platform. The team has a multimodal large model that takes a video (sampled frames, with...