AI Operational Assistant R0 Development - Senior Full-Stack / AI Engineer — Deliver a Small, Well-Specified WhatsApp + Azure AI Assistant (R0, 80h cap)

Python, PostgreSQL, Azure OpenAI · We are building **R0** — the first production slice of an operational assistant used by a real, paying French client. This is not a prototype, not a redesign exercise, and not an open-ended AI product build.

The architecture, product behavior, data contract and acceptance criteria are **already decided and documented**. We are buying implementation, not discovery.

You will receive, before you quote:

- a vendor-neutral engineering scope - a conversation contract (how the assistant must understand and speak) - an acceptance fixture pack containing **real data and expected outcomes** - the **source code of our existing PDF generation service**, which you must reuse

Most of the behavioral design work is already done. Your job is to build it correctly.

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### What the system does

A single operator interacts with the assistant **through WhatsApp** — text, voice notes, documents.

1. **Morning perception.** On weekday mornings the system reads new Gmail messages (read-only), summarizes what appears to need attention, and sends the operator a short brief on WhatsApp — audio first, text below. It does not classify into business workflows, does not reconcile payments, and does not cr