Ace Your System Design Interview
Practice with an AI that interviews, challenges, and whiteboards with you.
Why BlackboardLM?
Lifelike Interviews
🎙️ Voice-based AI that listens, adapts, and challenges you like a top-tier hiring manager.
Whiteboard With Your Interviewer
✏️ Shared canvas where you and AI can draw, edit, and refine designs together.
Flip Roles & Learn
🔄 Become the interviewer. Learn from the AI who responds like a world-class candidate.
Master the Blind 22
📚 Focus on the curated the most critical system design questions asked in real FAANG interviews: the "Blind 22".
Testimonials
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.
Alex Kim
Software Engineer
This platform helped me pass my system design interviews with AI feedback and real simulations.
Priya Patel
Senior Backend Engineer
Detailed feedback and interview replays gave me clear areas to improve before interviews.
Carlos Gomez
Tech Lead
Scenario-based walkthroughs made practicing complex systems feel real and effective.
Emma Johnson
Software Developer
Seeing the interview from both perspectives was a game changer in my preparation.
Liam O'Connor
Full-Stack Engineer
Unlimited AI interviews and learning topics made this the best prep tool I used.
Sophia Nguyen
Product Manager
Great experience and very helpful feedback. It prepared me for tough questions.