safe: A Production-Grade User Safety & Authentication System
A complete guide to building safe, a secure user management system that signals real backend and security engineering skills to hiring managers.
Postgres
User Safety in Production Systems: Designing for Trust and Resilience
A practical guide to embedding user safety into the architecture of modern software systems, with concrete patterns, anti-failure strategies, and real-world examples.
User Safety: A Hands-On Portfolio Project for Real‑World Engineering
A step‑by‑step guide to building a user‑safety service with FastAPI, Postgres, Celery and Docker that you can run, test, and extend for senior‑level impact.
Architecting Double-Entry Ledger Systems: Schema, Concurrency, and Auditability for Financial Integrity
How to design a double-entry ledger that stays correct under concurrency: event-sourced schema, Postgres constraints, and append-only audit trails.
Building a Durable Job Queue in Postgres: A Portfolio Project That Signals Real Systems Skill
Build a production-flavored job queue on Postgres from scratch: schema, worker loop, retries with exponential backoff, and a dead-letter queue. A portfolio project that demonstrates real distributed systems thinking.