Multi-Tenant Enterprise SaaS Infrastructure & Billing
Client: SubScale Tech (B2B SaaS Provider)
Architecting a secure multi-tenant cloud environment with automated workspace provisioning, Stripe metered billing, and automated CI/CD.
The Problem
SubScale was onboarding enterprise accounts manually. Provisioning a new client took 3 hours of manual database creation and environment variable editing.
Key Constraints
- •Strict data isolation required between competing enterprise tenants
- •Metered usage tracking across millions of monthly API calls
Technical Approach & Execution
Built an automated tenant provisioning engine utilizing PostgreSQL schemas and custom domain routing on Cloudflare for SaaS.
Automated Custom Domain & SSL Routing
Integrated Cloudflare for SaaS API so customers can point custom CNAME domains with instant automated SSL certificates.
Metered Billing Webhook Engine
Implemented high-performance usage aggregation pipelines that report monthly API consumption to Stripe Billing seamlessly.
Cloud & Deployment
- AWS ECS Fargate Container Cluster
- PostgreSQL Multi-Schema Architecture
- Cloudflare for SaaS Custom Domains
- Stripe Metered Billing
Tools & Languages
Key Engineering Lessons Learned:
- •Automating infrastructure provisioning removed a massive bottleneck to sales expansion
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