24K—licensedgold

Nanovest offered in-app digital gold by renting the capability from a third-party provider — the licence, custody, ledger and pricing all sat outside the company, capping margin, control and product velocity. 24K brings the entire stack in-house under a dedicated licensed trading entity, so gold is owned rather than resold.

Regulated commodity trading leaves no room for approximation: every gram must be provably backed 1:1 by physical metal, every trade reported to the exchange in real time, and the existing customer book migrated without a moment of drift. The platform also had to serve two masters at once — a durable multi-tenant engine for partners, and a consumer app that could cut over from the incumbent provider with minimal change.

I designed the system around a B2B core engine as the durable product, with the consumer app as its first tenant rather than the centre of gravity. The core is a NestJS multi-tenancy gateway holding custody, ledger and pricing, kept interface-compatible with the outgoing provider so clients can re-point instead of rewrite. Around it sit retail and operator services, three Next.js surfaces, and a price-oracle layer with a live simulator for validating consensus pricing against real feeds. Quality is handled by a unified TypeScript QA monorepo — Playwright across web and API, driven by agent sessions that generate plans, execute, self-heal and route results through a review inbox.

Ten services now stand up the platform end to end: core engine, retail and operator back-ends, three portals, oracle simulator, QA engine, developer automation and infrastructure. The architecture moves gold from a rented feature to an owned, licensable asset that other partners can be sold onto.