Ace your system design interviews
A real whiteboard, a clock counting down, and a graded report at the end. Practice the 45 minutes before they count.
Design a news feedAttempt 2Senior barTools to help you prepare efficiently
Pick a question from a curated bank
Our team picked the questions that actually come up, across both the system design and AI system design tracks. Or paste in the one you were asked last week.
Every question is graded against a rubric generated for the level you are targeting, so the bar moves with you.
Your write path is clear. I don’t see a number anywhere — how much storage does a year of this take?
~1.2KB per post × 400M/day × 365 ≈ 175TB before replication.
Good. So which of those two databases is the one that hurts, and what do you shard it on?
Design it live, on the clock
A real whiteboard, seeded with a delivery framework, and a clock counting down the same 45 minutes you get on the day.
The interviewer reads your board as you draw and pushes where the detail is thin: a number you skipped, a component with no failure story.
Get graded and get better
Systematic grades your session the way a real interviewer would, then names the concepts to revisit and the delivery habits to fix before your next rep.
Every point is attached to a rubric axis and a justification, so you can see what it cost you. Then ask the grader why.
Cheaper than a single live mock, and available whenever you have 45 minutes
Frequently asked questions
Why not just ask an assistant like ChatGPT or Claude to mock interview me?
You can, but you end up assembling the interview yourself: a drawing tool in one tab, a question you thought up, and a chatbot that grades against whatever bar it invented that day. Systematic puts the whiteboard, the question bank, the clock and the grading in one place, on rubrics our team wrote around what system design interviewers actually score you on.
How does using Systematic compare to live mock interview services?
A live mock costs hundreds of dollars and has to be scheduled around someone else's calendar, so most people do one or two. Systematic is available whenever you have 45 minutes, for a fraction of that, and still does the part that makes a mock worth it: it reads your board as you work, asks follow-ups where the detail is thin, and points out design flaws you would otherwise take into the real thing.
Is the rubric fixed, or does the model invent one each time?
The five axes are fixed in code, one set per track. What gets generated is the band descriptors for a given question and level, so "Solid" on a rate limiter means something concrete and different from "Solid" on a payment ledger. Every point in the report is attached to an axis and a justification.
What levels of engineers is Systematic suitable for?
All levels ranging from interns to Staff+ engineers can get value from using Systematic. Each level has its own expectations and rubrics for the same question. Systematic's grading report provides a hire/no-hire recommendation and the level you actually performed at, next to the one you aimed for.
Does it cover AI and ML system design?
It is a full track with its own five axes: framing and metrics, data and features, modeling and retrieval, serving architecture, and evaluation. Questions include RAG over enterprise docs, feed ranking, fraud detection and LLM serving.
Walk in knowing exactly how you’ll spend the 45 minutes.
Your first session takes three quarters of an hour and ends with a score, your pacing, and the two things to sharpen before the next one. Do it tonight.
Start a free mock interview