Categories
Projects and notes, grouped by the problem they deal with.
Payments
Stripe Connect, PayPal and Authorize.net: creator payouts, payout ledgers and real-money play.
2 projects, 1 note
AI engineering
OpenAI and Claude APIs, RAG, agents and MCP, with token and cost controls that keep AI spend flat.
1 project, 4 notes
Cloud
AWS Lambda, SQS and S3, Google Cloud, Docker and CI/CD, sized to the budget.
2 projects, 1 note
Fintech
Quote engines and payroll calculation, where a wrong number costs someone money.
2 projects, 1 note
SaaS
Multi-tenancy, data isolation, roles and the architecture AI tools skip.
1 project, 5 notes
Security
Rate limits, tenant isolation, access control and what enterprise procurement asks for.
0 projects, 3 notes
Founders
Notes for founders on hiring, cost and checking a codebase without reading it.
0 projects, 14 notes
Send me your prototype’s link.
I read every message the same day. Then twenty minutes on a call about what breaks first.