Full-Stack Application/Fintech

Full-Stack SaaS Analytics Dashboard for Fintech

4.2x

User Engagement

-73%

Client Churn

15hrs

Saved Weekly

$42K

New MRR in 60 Days

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.

Our Solution

We designed and shipped a multi-tenant analytics dashboard with real-time data visualization, role-based access, and integrated billing.

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.

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.

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.

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.

Tech Stack

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.