Stop rebuilding the same foundations.
A reusable foundation for the backend systems every serious SaaS product eventually needs: multi-tenancy, authentication, organizations, permissions, and core APIs.
We've built these foundations too many times.
Every B2B product rebuilds the same plumbing before writing a single customer-facing feature.
Authentication. Organizations. Permissions. Tenant context. Core APIs. Data access.
Every growing SaaS startup spends 3 to 6 months rebuilding these exact foundational components. It consumes senior engineering bandwidth, generates boilerplate bugs, and delays customer feature validation.
The product-specific domain logic is what makes your company valuable. The foundation layer shouldn't consume your entire runway.
Inside Tenlyr Infra.
Modular, battle-tested components that plug directly into your stack.
Authentication
User identity and access foundations designed for enterprise security without auth vendor lock-in.
- Session token lifecycle
- SAML / OIDC enterprise SSO hooks
- Token rotation & refresh
- Secure cookie lifecycle
Organizations
Structure your product around companies, teams, workspaces, and delegated member management.
- Multi-organization switching
- Member invitations & join flows
- Workspace billing hierarchy
- Audit logs per organization
Permissions & RBAC
Control what users and roles can actually do, enforced at both the API route and database level.
- Granular policy evaluation
- Role inheritance trees
- Middleware route authorization
- Custom role overrides
Multi-Tenancy
Build products where multiple customers share the platform without ever sharing the wrong data.
- Automatic tenant context injection
- Row-level security enforcement
- Tenant-scoped connection pools
- Zero cross-tenant leakage
Core APIs
Standardized backend foundations providing uniform contract handling across your entire system.
- Uniform JSON error standards
- Input schema validation
- Rate limiting & abuse prevention
- Durable webhook dispatcher
Data Routing
Consistent, high-throughput patterns for database access, query tracing, and cache synchronization.
- Read/write replica routing
- Connection pool management
- Automated slow query tracing
- Zero-downtime migration tooling
Why not build it yourself?
You can. And sometimes you should. If your core commercial differentiator is inventing a novel cryptographic permission system, you should build it in-house.
But if your company is building an AI agent for legal workflows, a B2B finance platform, or a healthcare records portal—rebuilding tenant isolation, session management, and RBAC middleware from scratch is solving the same non-differentiating problem over and over again.
Build the part that makes your product different.
Let the foundation be a foundation. Tell us what you're building, and we'll integrate the right architectural layers into your codebase.
Production-tested foundations · Seamless integration alongside your team