SAAS SPECIALIZATION

SaaS Product Engineering

We build multi-tenant SaaS platforms featuring automated tenant isolation, Stripe recurring subscription engines, granular RBAC access controls, and real-time usage analytics.

Strict DB RLSTenant Isolation
Stripe / PaddleBilling Gateway
99.99%SLA Availability
14-28 DaysTime to Market
ENGINEERING OVERVIEW

Scalable Multi-Tenant Software Platforms

Empower your B2B or B2C SaaS business with robust multi-tenant database isolation, automated subscription tiering, team invitation flows, webhook event processors, and real-time telemetry dashboards.

Core Stack & Technologies:
Next.js 16Node.jsGo (Golang)PostgreSQL RLSStripe APIRedisDockerClerk / Auth0Resend EmailPostHog Telemetry

Multi-Tenant Row-Level Security (RLS)

PostgreSQL Row-Level Security (RLS) policies guaranteeing complete data isolation and privacy across enterprise tenant accounts.

Stripe Recurring & Metered Billing

Seamless Stripe Billing API integration supporting monthly, annual, seat-based, usage-metered, and custom enterprise invoice plans.

Role-Based Access Control (RBAC)

Granular permissions for Owner, Admin, Manager, and Member roles paired with SAML 2.0 / Enterprise Single Sign-On (SSO).

Usage Metrics & Audit Telemetry

Real-time tracking of API consumption, credit balances, security event audit trails, and exportable CSV compliance logs.

Automated Team Onboarding & Invites

Self-service organization creation, email invitation links, automated team seats allocation, and domain auto-join rules.

Feature Flagging & Tier Entitlements

Dynamic feature gating middleware activating advanced tools based on customer subscription plan levels (Free, Pro, Enterprise).

ENGINEERING METHODOLOGY

Implementation & Execution Roadmap

Phase 01

Multi-Tenant Architecture & RLS

Designing tenant-isolated PostgreSQL schemas, RLS policies, and organization domain boundaries.

Phase 02

Auth, Org Hierarchy & RBAC

Configuring user authentication, multi-org switching, role middleware, and team invite engines.

Phase 03

Stripe Webhook & Billing Engine

Building Stripe Checkout, customer billing portals, idempotent webhook handlers, and dunning automated retries.

Phase 04

Analytics, Telemetry & Launch

Integrating audit log pipelines, tenant analytics dashboards, and production AWS/Vercel deployment.

Verified Production Deliverables

What you receive when partnering with BrainXelerator for this service:

Multi-Tenant Database Schema with Row-Level Security
Idempotent Stripe Billing & Webhook Processing Engine
Self-Service Team Onboarding & Organization Switcher UI
Granular RBAC Permission Middleware & SAML SSO Module
Production Cloud Deployment & Telemetry Dashboard Set
Automated Billing & Dunning Payment Retry Integration

Technical FAQs & Architecture Clarifications

Common engineering questions regarding this service implementation.

Q:How do you guarantee cross-tenant data privacy in a multi-tenant database?

We implement PostgreSQL Row-Level Security (RLS) policies enforced at the database level. Every single query automatically appends and verifies the tenant ID header, ensuring that even if application code has a bug, data from Tenant A can never be accessed by Tenant B.

Q:How are failed payments (dunning) and plan upgrades/downgrades handled?

We build idempotent Stripe webhook handlers that listen for `invoice.payment_failed` and `customer.subscription.updated` events. Failed payments automatically trigger polite email reminders and temporary grace periods, while upgrades calculate pro-rated charges instantly.

Q:Can we support custom seat-based pricing and usage metering?

Yes! We integrate Stripe Usage-Based Metered Billing APIs. Your application reports usage events (e.g. API requests, AI tokens, storage gigabytes) to Redis, which periodically syncs with Stripe for accurate monthly invoice generation.

Ready to Build Your Project?

Schedule an architecture discovery session with our senior engineering team to review your technical requirements.