Senior Backend Engineer – SaaS Billing & Payments Platform
Summary
Builds and owns backend systems for SaaS billing, subscriptions, and payments, integrating Stripe and handling metering, invoicing, and entitlements.
United States Digital Space LLC is seeking an experienced Backend Engineer to own domain models and APIs for accounts, subscriptions, pricing, and entitlements. You will build subscription and usage-based billing systems with metering, invoicing, credits, proration, upgrades, and downgrades, integrating Stripe and other providers.
The role requires 5+ years of backend experience, strong API design, relational database expertise, and a focus on correctness and operability in billing systems.