Production Licensing, DRM & Subscription-Billing Systems
I design and build the licensing, DRM, and subscription-billing infrastructure that keeps software products monetized and protected in production — not prototypes. Hands-on experience owning a licensing portal now managing 4.3M+ keys across 350K+ customers.
What I deliver:
- License key generation & validation via JWT-secured REST APIs
- Floating/seat-based licensing for desktop apps (Electron, C++, .NET, WPF)
- Subscription billing & renewals through Braintree/PayPal, including WooCommerce
- Webhook-driven renewal, refund & notification workflows, plus admin dashboards
- Stack: PHP, Node.js, C#/.NET, MySQL, JWT, REST APIs
Built for SaaS vendors, desktop software publishers, and marketplaces that need secure, scalable licensing and billing running reliably at scale.