The challenge
A seed-stage fintech startup had raw transaction data pouring in from banking APIs but no way to visualize it for their 800+ B2B clients. Account managers were manually building spreadsheet reports every Monday — a process that took 15 hours per week and was riddled with errors. Clients were churning because they couldn't see the value of the platform without clear, real-time analytics.
What we built
We designed and shipped a multi-tenant analytics dashboard with real-time data visualization, role-based access, and integrated billing.
- 01
Multi-Tenant Architecture with Next.js + Supabase
Built a Next.js 14 App Router dashboard with Supabase handling auth, row-level security, and real-time subscriptions. Each client gets an isolated workspace with custom branding, ensuring data segregation and GDPR compliance out of the box.
- 02
Real-Time Charts with Chart.js + Server Actions
Implemented 12 interactive chart types using Chart.js — revenue waterfalls, cohort retention grids, transaction heatmaps, and cash flow projections. Server Actions stream fresh data every 30 seconds without full page reloads.
- 03
Stripe Billing Integration
Wired up Stripe for usage-based billing tied to API call volume and active dashboard seats. Built a self-serve upgrade flow with plan comparison, proration handling, and automated invoice generation.
- 04
Automated Report Generation
Created a Python-powered report engine that generates branded PDF reports every Monday at 6 AM, emails them to stakeholders via SendGrid, and archives them in Supabase Storage — eliminating manual reporting entirely.
Built with
Delivered in 6 weeks
Next.js
Dashboard UI & server-side rendering
Supabase
Database, auth & real-time subscriptions
Stripe
Usage-based billing & payments
Chart.js
Interactive data visualizations
Python
Automated report generation
SendGrid
Email delivery
The outcome
Client engagement with the platform increased 4.2x within the first month. Churn dropped 73% because customers could finally see real-time ROI. The founder closed $42K in new MRR within 60 days by demoing the dashboard to prospects.
- User Engagement
- 4.2x
- Client Churn
- -73%
- Saved Weekly
- 15hrs
- New MRR in 60 Days
- $42K
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