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System Design Circle

Senior engineers training each other on real architecture.

19,143 members

System Design Circle

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Private19,143 members$149
RBy Raj Subramanian

What you'll get

16-week structured system-design curriculum

Five modules: foundations, data systems, distributed systems, staff-level tradeoffs, capstone interviews. Every module ships with reading, writeup prompts, and a recorded teardown.

Weekly real-system teardowns

Each Sunday we dissect a real production system — Slack search, Uber dispatch, Stripe webhooks, YouTube live, Cloudflare Workers. Recordings stay in the library forever.

Live mock interview pairings

Get matched with a peer at your level every Tuesday. 60-minute mock, 30-minute mutual feedback, written rubric grading. Members complete an average of 24 mocks before they interview.

200+ teardown video library

Fully searchable archive of past teardowns, principal panels, and capstone reviews. Tagged by topic — partitioning, queues, consistency, observability — and by company stage.

Capstone presentations to senior panel

Every cohort ends with a 45-minute live design defense in front of FAANG and unicorn principals. Pass the panel and you've passed every interview you'll see in the wild.

Resume & offer-negotiation reviews

Senior engineers redline your resume and walk you through staff-level offer negotiation. Members regularly negotiate $40k–$100k more than their initial offer.

Private offers channel

Members share open requisitions at their companies — Stripe, Anthropic, Linear, Cloudflare, Datadog, Figma. Many members get hired through here.

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