Grevity CMSLicensing & Subscription Admin

01

Problem

Grevity ships on hardware-locked pendrives, so the business needed one place to manage plans, clients, subscriptions and licence files.

02

What I built

I built a TypeScript monorepo admin CMS with a NestJS + Fastify API using Drizzle ORM on PostgreSQL (Supabase) and a React + Vite + Tailwind UI.

It covers plan lifecycle, clients with duplicate detection, plan assignment and renewals, an append-only audit log, and signed pendrive-bound .lic generation using HKDF, AES-GCM and RSA.

Security includes Argon2id logins, server-side sessions, CSRF protection and throttling, with Zod contracts shared end to end.

03

Stack

• NestJS
• React
• TypeScript
• PostgreSQL
• Tailwind CSS