Quantum

The Interview Problem Nobody Talks About You've spent years mastering machine learning. You can explain transformer architectures in your sleep. You've deployed production models that serve millions of users. But when you walk into that FAANG interview room, something changes. The interviewer asks: "How would you design a real-time recommendation system at scale?" Suddenly, your mind goes blank. You know the concepts, but organizing them into a compelling, structured answer? That's a different skill entirely. This is why we built Quantum. Built By Engineers, For Engineers We've been in your shoes. We've sweated through those interviews. We've experienced the frustration of knowing the concepts but struggling to articulate them under pressure. That's why every feature in Quantum is designed with one goal: to get you hired. * No fluff — Every question is vetted and relevant * No gatekeeping — Start practicing immediately * No BS — Honest feedback that makes you better We've curated hundreds of interview questions from actual ML engineering interviews, covering: * LLM Architecture & Training — Fine-tuning strategies, RLHF, prompt engineering at scale * System Design — Building ML pipelines, model serving, feature stores, and MLOps * Distributed Training — Data parallelism, model parallelism, gradient synchronization * Infrastructure & Optimization — Inference optimization, quantization, GPU memory management The Quantum Experience 1. Practice Mode — Learn By Doing No more passive studying. Jump into our curated question bank and start answering immediately. Each question is tagged by: * Difficulty level (Easy, Medium, Hard) * Category (System Design, LLM, Infrastructure, ML Fundamentals) * Target companies (Google, OpenAI, Meta, and more) 2. AI-Powered Feedback That Actually Helps This is where Quantum truly shines. After you submit an answer, our AI doesn't just say "Good job!" or "Try harder." It provides detailed, actionable feedback: * ✅ Score breakdown (1-10) with specific reasoning * ✅ What you nailed — Concepts you explained well * ✅ What you missed — Critical blind spots in your answer * ✅ The complete picture — A comprehensive reference answer with architecture diagrams, trade-offs, and follow-up considerations * ✅ Follow-up questions — Prepare for the deep dives interviewers love It's like having a senior ML engineer review every single practice session. 3. Track Your Progress Watch yourself improve in real-time with: * Streak tracking — Build consistency with daily practice * Performance analytics — See which categories need more work * Score history — Track your improvement over time * Personalized recommendations — Focus on your weak areas 4. Mock Interviews (Coming Soon) Full-length, timed interview simulations with AI interviewers that adapt to your responses. Experience the pressure before the real thing. Why Engineers Are Switching to Quantum "I've used LeetCode for years, but when it came to ML system design, I was completely lost. Quantum's feedback on my first answer showed me exactly what I was missing. Two weeks later, I got an offer from Google."
— Senior ML Engineer, ex-Amazon "The questions are exactly what you'll face in real interviews. Not theoretical fluff — practical, production-focused scenarios."
— Staff Engineer, AI Startup "The AI feedback is incredibly detailed. It's like having a mentor who reviews every single answer."
— ML Engineer, preparing for Anthropic