Koajo: Fintech Savings Platform Built with Next.js & TypeScript

Ben

Ben Degbe

Koajo: Modernizing Rotating Savings for the Digital Age

Overview

Koajo is a fintech platform that digitizes the traditional rotating savings model (Ajo), transforming a centuries-old community savings practice into a secure, automated, and transparent digital experience. The platform empowers users to build wealth, avoid debt, and achieve financial goals through structured savings pods.
Technologies: Next.js 15, React 19, TypeScript, Tailwind CSS, Sass, Stripe API, Cloudinary, Recharts
Role: Frontend Developer
Project Type: Fintech Web Application

The Challenge

Traditional rotating savings systems have served communities for generations, but they face modern challenges:
- Manual tracking and coordination
- Risk of members or leaders disappearing
- Lack of transparency and security
- No automated payment processing
- Limited accessibility and scalability

The Solution

I developed a comprehensive web application that modernizes the Ajo concept with:

Core Features

- Structured Savings Pods: 12 or 24-week automated savings cycles
- Automated Transactions: Seamless contributions and scheduled payouts
- Multi-Goal Support: Create multiple pods for different financial objectives (emergency funds, business capital, debt payoff, etc.)
- Real-Time Dashboard: Track contributions, savings growth, and upcoming payouts
- Secure Verification: KYC/identity verification with Stripe integration for fraud prevention
- Debt-Free Approach: Build wealth without loans or credit checks

Technical Implementation

Frontend Architecture:
- Framework: Next.js 15 with App Router for optimal performance and SEO
- UI/UX: React 19 with TypeScript for type-safe, maintainable code
- Styling: Tailwind CSS and Sass modules for responsive, modern design
- State Management: React Hooks and Context API for efficient state handling
- Form Handling: React Hook Form with custom validation
- Charts & Analytics: Recharts and Nivo for financial data visualization
Key Integrations:
- Stripe: Payment processing, financial connections, and identity verification
- Cloudinary: Optimized media management for images and videos
- Next-Video: Efficient video asset handling
User Experience:
- Responsive design optimized for all devices
- Intuitive dashboard with real-time financial tracking
- Automated payment scheduling and notifications
- Secure authentication and identity verification flow
- Comprehensive transaction history and reporting

Impact & Results

- Accessibility: Made rotating savings accessible to a broader audience beyond traditional communities
- Security: Eliminated risks associated with informal savings groups through verified users and secure payment processing
- Automation: Reduced manual coordination overhead with automated contributions and payouts
- Transparency: Real-time tracking and reporting provide complete visibility into savings progress
- Scalability: Digital platform enables growth beyond local community limitations
## Technical Highlights
- Built with modern React patterns and Next.js App Router for optimal performance
- Type-safe development with TypeScript throughout
- Modular component architecture for maintainability and reusability
- Integrated third-party services (Stripe) for secure financial operations
- Responsive design ensuring excellent user experience across devices
- Comprehensive form validation and error handling
- Optimized asset management for fast loading times

Key Learnings

- Balancing traditional financial practices with modern UX expectations
- Implementing secure financial transactions with proper verification flows
- Creating intuitive interfaces for complex financial concepts
- Building trust through transparency and automation in fintech applications
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Posted Dec 5, 2025

React Next.js fintech app: automated rotating savings platform with Stripe integration, KYC verification, real-time financial dashboard, TypeScript.