SaaS Web Application
Scalable multi-tenant SaaS platform with authentication, role-based access, real-time dashboard, and third-party API integrations.
What needed solving
The client was running their business on a patchwork of spreadsheets and manual processes. As their user base grew past 5,000 accounts, they needed a centralised platform with role-based access, real-time reporting, and third-party integrations — all without disrupting live operations.
How I solved it
I designed and built a multi-tenant SaaS platform from the ground up. The architecture separates tenant data cleanly, supports granular role permissions, and exposes a REST API consumed by both the web dashboard and future mobile clients. The entire system was deployed on AWS with zero-downtime CI/CD pipelines.
A look at the product
Key Features
- Multi-tenant architecture with isolated data per account
- Role-based access control (Admin, Manager, Viewer)
- Real-time dashboard with live data updates
- REST API with JWT authentication
- Third-party integrations (Stripe, SendGrid, Slack)
- Fully responsive UI across all devices
Architecture
- 01Next.js frontend with server-side rendering for fast initial loads
- 02Node.js + Express REST API with modular route structure
- 03MongoDB with tenant-scoped collections for data isolation
- 04JWT-based auth with refresh token rotation
- 05AWS EC2 + S3 + CloudFront for deployment and static assets
- 06GitHub Actions CI/CD pipeline with staging and production environments
Results & Outcomes
Scaled to 10,000+ active users within 3 months of launch
Reduced API response time by 40% through query optimisation
Eliminated manual reporting — saving the client 20hrs/week
Zero downtime deployments across all releases
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