Real-world software projects: from problem to architecture to working product.

Reference architecture for shared retail catalog, inventory, orders and settlement, with stock reservation, reconciliation and payment-retry checks.
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One Flutter codebase for iOS and Android over a Go API, with offline-tolerant sync, idempotent writes, push notifications and remote config.
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Order intake, dispatch, event-sourced tracking, proof of delivery and settlement, where every invoice line traces back to a recorded event.
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Production orders, per-station reporting, material consumption and batch traceability, built so a finished unit can be traced back to its raw material lots.
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Retrieval-augmented answering over your own documents, with citations, human escalation, cost controls and an evaluation set — not a chatbot bolted onto a homepage.
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Tenant isolation, role-based permissions, subscription billing and per-tenant configuration, with the isolation decision made explicitly rather than by accident.
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