Devicely

Devicely is a commerce platform for reselling refurbished business laptops across Europe's marketplaces. On the surface it's a WooCommerce plugin; the real system lives under src/ as isolated, framework-independent domain code.

It is genuinely event-sourced: commands flow through an outbox with retry policies and reconciliation, so a crashed-and-retried worker produces the same result instead of double-listing or double-charging (exactly-once, in practice). It syncs to Refurbed and BackMarket in depth, with Bol and Cdiscount through lighter adapters.

A profit engine encodes Belgian tax rules, an eligibility engine turns messy, inconsistent product notes into automatic publish-or-hold decisions, and a local vision model gates every product photo — clean, front-facing, the right laptop — entirely on-device, so no customer data leaves the machine. A fulfilment layer handles carriers, labels and pick-lists.

356 tests pass (2,551 assertions), built solo in about three weeks. It's code-complete: an evidence-based launch check shows every engineering gate green — what's left is business setup (payment gateway, legal entity, SMTP), not code.