Software Engineer ML System Design Interview Questions
Practice 117 real ML System Design interview questions for Software Engineer roles. From companies including Anthropic, OpenAI, Amazon, NVIDIA, 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."
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...
Implement resilient LLM provider pool
System Design Task: Resilient Multi‑Provider LLM Client Library Context You are designing a client library used by backend services to call external L...
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...
Design trending queries ranking system
This question evaluates the ability to design scalable, low-latency ML-driven systems for detecting and ranking trending queries, covering competencie...
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 personalized discovery recommendations
This question evaluates understanding of recommender systems and personalization, covering skills in data collection and event logging, candidate retr...
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 AI-Powered Document Search
This question evaluates system-design and machine-learning engineering skills for building a scalable AI-enabled document ingestion pipeline, covering...
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...
Design RAG Retrieval for Data Assets
This question evaluates skills in designing hybrid retrieval pipelines over enterprise metadata, including competencies in information retrieval, exac...
Estimate VRAM and compare model parallelism
This question evaluates understanding of GPU memory budgeting for large matrix multiplications and the comparative trade-offs between pipeline and ten...
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 batched inference API
This question evaluates competency in designing scalable, low-latency ML inference systems with dynamic batching, covering system architecture, reques...
What skills are needed for AI infra roles?
This question evaluates familiarity with AI infrastructure and LLM serving, including systems and performance engineering, model inference mechanisms,...
Design a prompt processing backend
Design a prompt processing backend System Design: Background Processing Backend for LLM Prompts Context Design a multi-tenant backend that processes l...
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 End-to-End ML 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 ...
Design ChatGPT homepage with streaming choices
Design ChatGPT homepage with streaming choices System Design: ChatGPT‑Style Homepage with Streaming Goal Design a ChatGPT‑style web homepage end to en...
Design a Retrieval-Augmented Generation (RAG) system
This question evaluates a candidate's ability to design production-grade Retrieval-Augmented Generation systems, testing competencies in information r...
Design a fraud detection system
Design a Real-Time Payment Fraud Detection System Design an ML-powered system that scores each online card-not-present (CNP) payment during authorizat...