HarshPatel

Ahmedabad, Gujarat
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SaaS Platform Development — Multi-Tenant Architecture, Stripe Billing & Dashboards

From $1,000

End-to-end SaaS application development with multi-tenant architecture, Stripe subscription billing, role-based access control, and real-time analytics dashboards. From MVP to production-ready platform.

SaaS Platform Development — Multi-Tenant Architecture, Stripe Billing & Dashboards

What's Included

  • Multi-Tenant Architecture + Row-Level Security
  • Subdomain / Custom Domain Routing
  • Stripe Subscriptions
  • Trials & Proration
  • Stripe Webhook Handler (Full Event Coverage)
  • Stripe Customer Portal Integration
  • JWT Auth + OAuth (Google
  • GitHub
  • Microsoft)
  • SAML 2.0 / SSO for Enterprise Plans
  • Role-Based Access Control (RBAC)
  • Team Invitations with Role Assignment
  • Real-Time Analytics Dashboard
  • Transactional Email Sequences (Resend)
  • In-App Notification Center
  • Usage-Based Feature Limits per Plan
  • Audit Logging & GDPR Compliance
  • Sentry Error Tracking + PostHog Analytics

SaaS Platform Development — Build the Product. Own the Revenue.

Building a Software-as-a-Service platform is fundamentally different from building a website or a CRUD application. The architecture decisions you make in week one — how you handle tenant isolation, how you model your subscription tiers, how you design your permission system — determine whether your product can scale to 10,000 users or collapses under the weight of its own technical debt at 500. I've built this before. I know where the traps are.
I build SaaS products from scratch, handling every layer from database schema to billing webhooks to analytics dashboards, so you can focus on your product vision rather than infrastructure.

What's Included in a SaaS Build

Multi-Tenant Architecture

Multi-tenancy — the ability for a single application to serve multiple independent customers with complete data isolation — is the foundational architectural requirement of every SaaS product. I implement the right isolation model based on your security requirements and scale:
Tenant Isolation Models:
ModelDatabase StructureBest ForIsolation Level
Shared database, shared schematenant_id column on every tableEarly-stage startupsLogical only
Shared database, separate schemasPostgreSQL schemas per tenantMid-market SaaSStrong logical
Separate database per tenantIndividual DB per organizationEnterprise / compliance-heavyPhysical
I implement Row-Level Security (RLS) at the database layer (PostgreSQL + Supabase) so tenant data isolation is enforced by the database itself — not just application-level WHERE clauses that can be accidentally omitted.
Tenant management includes:
  • Organization creation and onboarding flow
  • Subdomain routing ({tenant}.yourapp.com) or path-based routing (yourapp.com/{tenant})
  • Custom domain support for white-label SaaS
  • Tenant-specific feature flags and configuration
  • Cross-tenant admin panel for SaaS owners to manage all accounts

Stripe Subscription Billing

Billing is the most business-critical part of your SaaS — and the part developers most often get wrong. I implement Stripe's complete subscription billing stack, not just a checkout page.
Billing architecture includes:
Products & Pricing:
  • Stripe Products and Prices configured for your tier structure (Free, Pro, Business, Enterprise)
  • Flat-rate, per-seat, usage-based, and hybrid pricing model support
  • Annual vs. monthly billing with discounts
  • Add-ons and one-time charges alongside recurring subscriptions
Checkout & Upgrades:
  • Stripe Checkout or custom-built payment form using Stripe Elements
  • Upgrade/downgrade flows with immediate proration calculations
  • Trial periods with card-on-file capture (no charge until trial ends)
  • Coupon and discount code redemption
Webhooks (the part most developers skip):
  • checkout.session.completed → provision plan, create tenant record, send welcome email
  • customer.subscription.updated → upgrade/downgrade feature access
  • customer.subscription.deleted → downgrade to free tier, schedule data retention
  • invoice.payment_failed → dunning emails, feature restriction after grace period
  • invoice.payment_succeeded → renewal confirmation emails
  • Idempotency handling — duplicate webhook delivery handled safely
Customer Portal:
  • Stripe Customer Portal embedded in your app — customers manage their own subscription, payment methods, and invoices without contacting support
  • Branded with your logo and colors
Billing Dashboard (internal):
  • MRR, ARR, churn rate, and revenue per plan tier
  • Customer lifetime value (LTV) calculations
  • Failed payment and dunning status overview

Authentication & Role-Based Access Control

Authentication:
  • Email/password with bcrypt hashing and secure session management
  • Magic link (passwordless) login
  • OAuth 2.0 — Google, GitHub, Microsoft SSO
  • SAML 2.0 / OIDC for enterprise single sign-on (SSO)
  • Multi-factor authentication (TOTP via Google Authenticator / Authy)
Invitation system:
  • Team members invited by email with role pre-assignment
  • Invitation tokens expire after 72 hours
  • Invited users can join an existing organization without re-entering org details
Role-Based Access Control (RBAC):
I implement a flexible RBAC system at both the application and database layer:
txt
Organization
  └── Owner (full access, billing management)
  └── Admin (member management, all features)
  └── Member (standard feature access)
  └── Viewer (read-only access)
  └── Custom roles (per-plan, fully configurable)

Ready to start?

Let's discuss how we can help with your project.

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