Architecture Notes
Hard-won lessons and durable patterns from building fintech platforms, enterprise integrations, distributed systems, and AI automation.
This is a knowledge base of architecture lessons — the kind learned by building and operating real systems, not reading about them.
Each note is short and opinionated. It captures a pattern, a tradeoff, or a mistake worth not repeating. These are not blog posts. They are the things I'd want to re-read before making a design decision.
A recurring theme runs through most of them: the hard part is rarely the algorithm. It's the exceptions, the data quality, the auditability, and the operational reality around the happy path.
Topics
- Distributed Systems — event-driven design, idempotency, serverless batch processing.
- System Design — multi-tenant SaaS and platform foundations.
- Fintech Systems — reconciliation engines and auditability.
- Enterprise Integrations — ERP/CRM/banking connectivity and SFTP platforms.
- AI Systems — document processing, human-in-the-loop workflows, and RAG done right.
New notes are added over time. Anything dropped under content/notes appears
here automatically.