Systems that are still running
Each of these went into production and stayed there. What follows is the problem, the shape of the solution, and what it actually changed.
AI analyst agents inside a distributor ERP
Two LLM roles wired into a sales-management platform: an analyst on the management dashboard, a sales assistant on the B2B portal. Both answer only from the KPI API - the model never writes a number it did not fetch.
Two-way marketplace sync that stopped overselling
A Symfony service that keeps price and stock consistent across Amazon, Shopify and Walmart. One adapter interface per marketplace, a Workflow state machine per item, and a dead-letter queue for everything that fails.
A 100M-row pipeline that finishes before morning
Order, product and price feeds land through RabbitMQ into Laravel workers, get validated and transformed, and settle into partitioned PostgreSQL tables with Redis in front of the hot data.
Telegram lead bot wired into the CRM
Inbound Telegram messages go through classification and entity extraction, get scored for priority, and arrive in the CRM as complete lead records. The sales team opens a queue, not an inbox.