Multi-Tenant SaaS Platform
Shared-Infrastructure B2B Portal & Custom Domain Engine
A multi-tenant B2B SaaS architecture in Next.js and MongoDB that onboards enterprise clients with custom domains, white-label branding, and isolated data—with 0 redeploys.
What needed to be solved
Many B2B companies launch separate code copies or servers every time they sign a new enterprise client who wants a custom domain and tailored branding. Over time, maintaining dozens of separate deployments slows down updates, increases hosting costs, and creates version mismatches.
How we engineered the platform
We built a centralized multi-tenant platform using Next.js, Express, TypeScript, and MongoDB. The system automatically identifies each client organization from the incoming domain or subdomain, dynamically applying their branding, content, forms, and isolated data workspace while running on one unified, easy-to-maintain codebase.
Core features shipped to production
Automatic Domain & Subdomain Routing
Resolves each customer tenant dynamically from the request hostname so clients can use their own custom domains seamlessly.
Strict Tenant Data Isolation
Ensures every client organization's records, forms, and settings remain cleanly separated at the API and database layers.
White-Label Branding & Configuration
Supports per-client logos, color palettes, page content, and custom intake forms without touching application code.
Centralized Admin Control Plane
Gives internal operations teams one unified dashboard to provision, configure, and monitor all customer workspaces.
How the system works end-to-end
Domain Ingress
Incoming client domain or subdomain is inspected automatically on arrival.
Tenant Resolution
Express & TypeScript middleware loads the matching organization profile and permissions.
Isolated Data Store
MongoDB queries are scoped strictly to the active tenant's workspace.
Dynamic Frontend
Next.js renders the client's custom branding, pages, and workflows instantly.
Ready to modernize a system or launch a new platform?
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Standard bank transfers, ACH, wire, and corporate cards supported. Formal NDA and full IP assignment agreements provided upon project commencement.