Software Engineer ML System Design Interview Questions
Practice 97 real ML System Design interview questions for Software Engineer roles. From companies including Anthropic, OpenAI, NVIDIA, Amazon, Meta.
"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 game recommendation modeling approach
Scenario You are building a personalized game recommender for a consumer app/store. The goal is to recommend a ranked list of games to each user to in...
Design a Hybrid Evaluation Platform
Design an evaluation platform for model outputs that supports both human evaluation and automated LLM-based evaluation. The system should: - ingest pr...
Design a GPU-Efficient Video Service
Design a text-to-video generation platform similar to a modern generative video product. Treat the actual model inference on GPUs as a black box: a jo...
Design sequential reveal classification and policy
FashionMNIST: Row-wise Reveal Evaluation, Reward-Optimal Masking, Augmentation, and Early Exit Context You have a trained CNN classifier for FashionMN...
Design an LLM-based binary classifier
Design a Binary Text Classifier Using Only a Log-Probability Scoring Helper Context You are building a binary text classifier without fine-tuning. You...
Design a Code Review Agent
Design an AI-powered code review agent that assists developers by reviewing pull requests and producing actionable feedback. The agent should be able ...
Design a content moderation platform
Design a large-scale content moderation system for a short-video platform. Users can upload videos, captions, comments, audio, and other metadata. The...
Design a multimodal embedding service
System Design: Multimodal Embedding Pipeline for Documents, Images, and Videos You are designing a production service that computes embeddings for use...
Design an e-commerce recommendation system
Design an Amazon-Scale E‑Commerce Product Recommendation System Context You are designing a large-scale recommendation system that powers multiple use...
Outline the ML inference and labeling pipeline
Outline the ML inference and labeling pipeline Audio Detection System: ML Inference and Data Pipeline (Model Architecture Out of Scope) Context and As...
Design a Static Audio Detection System
System Design: Static Audio Detection Pipeline Context Design an offline (non-live) audio detection system that processes static audio files (e.g., us...
Design a Multimodal Training Data Pipeline
Design a backend system for collecting, filtering, and storing training data sent by many clients. Clients upload records that may include large media...
Design an email spam detection system
Design an email spam detection system System Design: End-to-End Email Spam Detection Context Design an end-to-end system that detects and handles spam...
Design a cloud AI inference platform
System Design: Cloud AI Inference Platform for Real-Time and Batch Context Design a multi-tenant cloud platform that serves machine learning models fo...
Design an image detection system
System Design: End-to-End Image Object-Detection Service Context Design a production-grade service that ingests user-uploaded images, runs object dete...
Estimate VRAM and compare model parallelism
You are a performance engineer reasoning about GPU memory and parallelism for a transformer-like workload whose runtime is dominated by large matrix m...
Design autonomous cloud monitoring and remediation
Design an AI-Assisted Monitoring and Auto-Remediation Service Context Design a service that monitors cloud applications across multiple providers, col...
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 a feedback-text personalization data system
System/ML design scenario: personalize using user feedback text You are building an embeddings + personalization pipeline for a consumer product (e.g....
Design a customer LTV prediction system
System Design: End-to-End ML for Customer Lifetime Value (LTV) Context You are designing an end-to-end machine learning system to estimate customer li...