Engineering Wisdom Distilled

Master the art of scalable architecture

Architect better systems with human-curated insights from tech giants. Powered by RAG for senior engineers.

Amazon Amazon
Meta Meta
Google Google
Microsoft Microsoft
Netflix Netflix
OpenAI OpenAI
Uber Uber
Airbnb Airbnb
Stripe Stripe
GitHub GitHub
Dropbox Dropbox
Slack Slack
Pinterest Pinterest
Cursor Cursor
Shopify Shopify
LinkedIn LinkedIn
DoorDash DoorDash
Lyft Lyft
Cloudflare Cloudflare
Amazon Amazon
Meta Meta
Google Google
Microsoft Microsoft
Netflix Netflix
OpenAI OpenAI
Uber Uber
Airbnb Airbnb
Stripe Stripe
GitHub GitHub
Dropbox Dropbox
Slack Slack
Pinterest Pinterest
Cursor Cursor
Shopify Shopify
LinkedIn LinkedIn
DoorDash DoorDash
Lyft Lyft
Cloudflare Cloudflare
Coming soon · Private beta

Meet InterviewBuddy

Paste a job description. Get a resume tailored from your real work history, a voice mock interview built on that JD, and scored feedback that cites your own answers — not generic advice.

See the walkthrough
5 screens · Profile builder · JD → Resume · Voice mock · Feedback · Dashboard
Profile builder screen
Profile
Job description to tailored resume screen
JD → Resume
Voice mock interview screen
Voice Mock
Scored feedback report screen
Feedback
The Difference

Not another AI chatbot.
A curated knowledge base.

Generic LLMs hallucinate. Knowledge Café answers are grounded in real engineering blog posts, hand-reviewed by humans.

Human-in-the-Loop

Every blog post is manually reviewed and verified. No raw scraping — a human ensures quality at every step.

Zero Hallucinations

RAG-powered responses are grounded in real content. Answers cite actual posts from production systems.

Real-World Scale

Insights from companies running systems at billions of requests. Learn what giants actually did in production.

The Pipeline

Engineered for precision

Crawl & Ingest

Engineering blogs from tech giants are continuously crawled and processed.

Human Review

Every article is manually reviewed for accuracy and relevance before indexing.

Vector Embeddings

Verified content is transformed into semantic vectors for precise search.

RAG-Powered Q&A

Answers are grounded in verified content — eliminating hallucinations.

Early Access

Join the waitlist

Knowledge Café is under active development, and InterviewBuddy — our interview prep app for senior engineers — is entering private beta. One signup covers both.

Latest Articles

Deep-dive engineering posts on how tech giants solve hard problems at scale.

View All Articles
7/9/2026 Knowledge Café

The 200-Millisecond Yes: Designing a Card Authorization System That Survives Black Friday

A principal engineer's blueprint for an issuer authorization system — meeting a strict sub-200ms latency budget with layered caching, disciplined connection pooling, and a ledger design that doesn't melt under hot-spot writes at peak.

Read Article →