Selected Backend Projects I've Worked On
Real solutions built for real businesses in Tanzania and beyond. Every project includes clean code, proper documentation, and a focus on scalability & security.
Scalable E-commerce Backend
Dar es Salaam Startup
Built a complete backend system handling product catalog, user authentication, order management, and real-time inventory. Integrated M-Pesa and Tigo Pesa for seamless payments. The system currently handles 1,200+ daily transactions with 99.9% uptime.",
Overview
Built a complete backend system handling product catalog, user authentication, order management, and real-time inventory. Integrated M-Pesa and Tigo Pesa for seamless payments. The...
External Link
Add a live or repository URL from the admin dashboard.
65%
Reduction in payment failures
40%
Improvement in API response time
1,200+
Daily transactions handled
Fintech Payment Gateway Integration
Lending Platform
Developed a secure backend connecting multiple mobile money providers with a lending platform. Implemented webhook handling, transaction reconciliation, and fraud detection logic to protect both users and the business
Overview
Developed a secure backend connecting multiple mobile money providers with a lending platform. Implemented webhook handling, transaction reconciliation, and fraud detection logic t...
External Link
Add a live or repository URL from the admin dashboard.
TZS 450M+
Total transactions processed
0
Major security incidents
100%
Automated daily reconciliation
Inventory Management System Backend
Growing Retail Chain
Built a robust backend for a growing retail chain with multi-user access control, real-time stock updates via WebSockets, supplier management, and a reporting dashboard API.
Overview
Built a robust backend for a growing retail chain with multi-user access control, real-time stock updates via WebSockets, supplier management, and a reporting dashboard API.
External Link
Add a live or repository URL from the admin dashboard.
80%
Reduction in stock discrepancies
15+
Simultaneous users without lag
Real-time
Low-stock notifications
Open Source M-Pesa Webhook Handler
Open Source · GitHub
Created and open-sourced a clean, production-ready template for handling M-Pesa callbacks safely and efficiently. Used by developers across Tanzania to speed up payment integration.
Overview
Created and open-sourced a clean, production-ready template for handling M-Pesa callbacks safely and efficiently. Used by developers across Tanzania to speed up payment integration...
External Link
href: https://github.com/Denisjuma
Open
Source — free to use
Production
Ready out of the box
Full
Webhook verification included
My Development Process
A consistent, transparent process that keeps you informed at every stage.
Discovery
Deep understanding of your business needs before writing a single line of code.
Architecture Planning
Choosing the right tech stack for your specific scale, budget, and team.
Development
Clean code with regular updates. You see progress every week.
Testing & Security
Rigorous testing and security checks before anything goes live.
Handover & Support
Full documentation plus optional ongoing maintenance after delivery.
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