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SaaS • Architecture • Billing

SaaS Platform Development

A scalable SaaS foundation built around clear boundaries, billing isolation, entitlement enforcement, safe rollouts, and predictable evolution.

Entitlements Subscriptions Rollouts Observability Security by Design
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Record Summary

Multi-tenant SaaS engineered for controlled complexity.

Model

Multi-tenant with strict data boundaries and tenant-scoped authorization.

Billing

Billing isolated as a dedicated domain with auditability and reconciliation safety.

Security

Least privilege, token policies, and hardening aligned with SaaS attack surfaces.

Challenge Reality

The hard parts.

  • Entitlements drifting away from billing state (access mismatch).
  • Feature rollout risk across tenants with different plans.
  • Audit requirements without compromising performance.
  • Authorization boundaries across APIs and admin tools.

Solution Design

Engineering decisions.

  • Explicit entitlement service enforcing plan rules at runtime.
  • Billing as a separate domain with event-driven updates + reconciliation.
  • Progressive delivery: feature flags + canary + safe rollback.
  • Observability: tracing + structured logs + security signals.

Architecture Boundaries

Clear domains prevent chaos.

Core Domain

Product

Business logic isolated from billing and identity, keeping the core clean and testable.

Identity & Authorization

Security

Tenant-scoped policies, role enforcement, and hardened admin operations.

Billing & Entitlements

Correctness

Billing events update entitlements; reconciliation jobs eliminate drift and inconsistencies.

Delivery & Rollouts

Reliability

Feature gating, staged rollouts, and rollback-first strategy minimize incident probability.

Building a SaaS product that must scale?

We engineer the foundation: security, reliability, and clean evolution from day one.

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