Solventist

Solventist builds software for companies whose work does not fit off-the-shelf systems: quoting and pricing engines where every product carries its own rules, multi-tenant platforms where a manufacturer's dealer network quotes from one source, and point of sale that keeps selling when the network drops.

The backend, the web panel and the mobile app come from the same team. NestJS, TypeScript, Prisma and PostgreSQL on the server; Next.js on the web; Flutter on mobile. One database and one set of credentials per customer.

We describe our work with measurements rather than adjectives. From our own run reports: 61 ms per sale on a till with the network cable pulled; 51 of 51 events accepted by the server with none rejected and none retried; 53 endpoints and 283 passing tests on a multi-tenant B2B API; and a pricing engine that reproduces a customer's own spreadsheet to ten decimal places.

Case studies are published at solventist.com.