Engineering told as it happened: problem, decisions, trade-offs and outcome.
Spec-driven development, context engineering, guardrails and LLMs in the product — the process as it runs today, with the numbers it produced: 4k spec lines and 2.5k automated tickets.
The client didn't want to replace their ERP — and they were right. DBF → PostgreSQL, CDC across 17 channels, a transactional inbox and four reconciliation loops: the full case.