Expo

Expo helps you practice AI engineering interview questions and earn a completion certificate, offline and with no sign-up.

How it works:
1. Start at your level
The adaptive question engine adjusts to what you already know.
2. Practice every day
Answer real-world AI engineering questions with clear, bite-sized explanations and quick 60-second drills.
3. Earn your certificate
Pass the final 25-question exam with 80% or more to claim your completion certificate.

Learn AI engineering by practicing, not just reading theory. Prepare for AI and machine learning interviews with questions on LLM architecture, agentic workflows, embeddings, vector databases and system design.

What you get

🧠 Adaptive learning: questions tailored to your current level.
🔁 Spaced repetition: tricky concepts come back until you master them.
🌳 Skill tree and daily challenges: earn XP and test your speed with 60-second drills.
🎓 Completion certificate: pass the 25-question final exam with an 80% score.
✈️ Zero friction: no sign-up, no internet required, no subscription fees.

Great for software engineers, ML engineers and developers preparing for AI engineer, LLM or generative AI job interviews.

👉 Download Expo and start practicing AI engineering today.