Ace Your System Design Interview

📣 Practice with an AI that interviews, challenges, and whiteboards with you.

Interactive Whiteboard Dashboard

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 Core 22

📚 Focus on the curated "Blind 22" - the most critical system design questions asked in real FAANG interviews.

Testimonials

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

A

Alex Kim

Software Engineer

X

This platform helped me pass my system design interviews with AI feedback and real simulations.

P

Priya Patel

Senior Backend Engineer

X

Detailed feedback and interview replays gave me clear areas to improve before interviews.

C

Carlos Gomez

Tech Lead

X

Scenario-based walkthroughs made practicing complex systems feel real and effective.

E

Emma Johnson

Software Developer

X

Seeing the interview from both perspectives was a game changer in my preparation.

L

Liam O'Connor

Full-Stack Engineer

X

Unlimited AI interviews and learning topics made this the best prep tool I used.

S

Sophia Nguyen

Product Manager

X

Great experience and very helpful feedback. It prepared me for tough questions.

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