Software Engineer ML System Design Interview Questions
Practice 88 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 dynamic rental pricing system
System Design: ML-Driven Nightly Pricing for Short-Term Rentals Context Design a production ML system that recommends (and optionally auto-sets) night...
Design a fraud detection system
System Design: Real-Time Payment Fraud Detection Context Design a real-time fraud detection system for online payments (card-not-present). The system ...
Design an End-to-End ML System
System Design: Real-Time Recommendation ML System Context You are tasked with designing an end-to-end machine-learning system that serves real-time re...
Design a response-ranking ML system
System Design: Ranking Candidate Text Responses to Maximize User Satisfaction You are designing an end-to-end machine learning system that, given a us...
Design ChatGPT homepage with streaming choices
System Design: ChatGPT‑Style Homepage with Streaming Goal Design a ChatGPT‑style web homepage end to end. Users should type a prompt and see the model...
Optimize attention for long sequences
System Design: Efficient Attention for Long Sequences Context You are designing or optimizing sequence models that must process long contexts under ti...
Design a recommendation system
Design a User–Item Recommendation System Context You are asked to design an end-to-end recommendation service that suggests items to users. The servic...
Describe model-to-GPU execution pipeline
From Model Definition to GPU Execution: Pipeline and Optimizations You are asked to explain the end-to-end path a machine learning model takes from au...
Integrate Chroma and design semantic search API
System Design: Add Semantic Search to an Existing CRUD Service Using Chroma Context You own a document CRUD service (create/read/update/delete) that s...
Design an end-to-end recommendation system
System Design Prompt: End-to-End Movie Recommendation System You are tasked with designing an end-to-end movie recommendation system for a large-scale...
Design place-of-interest ML system
Design a POI (Places of Interest) Recommendation System Context Design a global POI recommender for a mobile maps/feed product that suggests nearby pl...
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 emails at scale. Assume you are build...
Design anomaly detection and response platform
Design an AI-Driven OS Snapshot Anomaly Detection Service Context You are designing a cloud service that ingests operating system (OS) snapshots from ...
Design a secure ML data platform
System Design: Secure, Ethical, Multi‑Tenant ML Data and Inference Platform Context Design a cloud-based ML platform used by multiple internal product...
Design personalized discovery recommendations
You are designing a personalized "Discovery" page for an AI-powered search/Q&A platform (similar to Perplexity). The Discovery page should show each u...
Design Pin recommendation system
System Design: Pin’s Home Feed Recommendation System Context You are designing an end-to-end recommendation system for Pin’s personalized home feed at...
Explain ML compilation optimizations and hardware fit
ML Compiler Optimizations and Platform Targeting Context You are designing a compiler/runtime stack for deep learning workloads that must run efficien...
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-end. Be concrete about des...
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...
Design an LLM Log Parsing Workflow
Design a production workflow that uses an LLM, optionally combined with deterministic parsers, to convert heterogeneous raw log messages into structur...