System design interview AI — a real-time copilot for senior rounds
System design rounds reward structured, trade-off-driven answers under pressure. Interview Copilot listens to the interviewer and gives you real-time architecture answers with trade-offs — scalability, consistency, bottlenecks — so you lead the discussion instead of scrambling.
Structured answers, instantly
As the interviewer frames the problem, the AI surfaces a clear structure: requirements, high-level design, data model, scaling, and trade-offs. You get talking points the moment you need them, not after the round.
Grounded in your experience (Pro)
With Pro, answers are personalized to your resume — so when you're asked how you'd design something, the AI ties it to your real stack and past projects, in first person, not a generic textbook answer.
Invisible and hands-free
It hears the interviewer through system audio and stays invisible on screen share across Zoom, Meet and Teams. No hotkeys mid-sentence — Auto-Answer responds the instant they finish asking.
Start free
Try it free on Groq, then upgrade to Pro for the latest Claude with resume personalization — ideal for high-stakes senior and staff rounds.
FAQ
Can it help with system design interviews?
Yes. It listens to the interviewer’s prompt in real time and suggests a structured answer — requirements, high-level design, data model, scaling and trade-offs — so you have a framework to speak from.
Does it explain trade-offs like CAP, caching and sharding?
It covers the standard system-design levers: consistency vs availability, caching layers, sharding and replication, queues, load balancing and bottleneck analysis — with the trade-offs spelled out, not just named.
Is the answer tailored to my experience?
On Pro, answers are personalized to your resume, so the design references the stack and scale you actually worked with — which makes your explanation sound like you, not a textbook.
How real-time is it during the call?
It detects when the interviewer finishes a question and starts answering automatically, streaming the first tokens within about a second — no button to press mid-conversation.
Which architectures and technologies does it cover?
From classic web-scale designs (URL shorteners, feeds, chat, rate limiters) to data-heavy and distributed systems, across common databases, message brokers and cloud primitives.