Hi, my name is

Hannington.

I build software that solves real problems.

I'm a fullstack developer based in Nairobi, Kenya specializing in POS systems, management platforms, and mobile money integrations for East African businesses. Offline-first. Fraud-resistant. Built to last.

< View My Work /> < Get In Touch />

01. About Me

Hello! I'm Hannington, a fullstack developer passionate about building software that actually works in the field. My journey started when I realized how many businesses in East Africa struggle with outdated systems, fraud, and software that can't handle local payment methods.

I specialize in building management systems that handle M-Pesa payments, work offline when the internet drops, and are simple enough for non-technical staff. From small retail shops to hospitals and hotels — I build tools that make businesses run better.

Here are a few things I specialize in:

➤ M-Pesa & Mobile Money Integration
➤ Offline-First Architecture
➤ Fraud-Resistant Design
➤ POS & Management Systems

hannington.dev

 1 const developer = {
 2   name: "Hannington",
 3   role: "Fullstack Dev",
 4   location: "Dar es Salaam",
 5   skills: [
 6     "POS Systems",
 7     "Hotel Mgmt",
 8     "M-Pesa API",
 9     "Offline-First",
10   ],
11   available: true,
12 };
13
14 developer.build();

02. Tech Stack

Frontend

HTML5 & CSS3
JavaScript (ES6+)
React
Vue.js
Tailwind CSS

Backend

Node.js & Express
Python & Django
PHP & Laravel
REST APIs
M-Pesa API

Database

MySQL
PostgreSQL
MongoDB
SQLite
Firebase

Tools

Git & GitHub
Docker
Linux
Electron
VS Code

03. Things I've Built

Management

Rental Management Software

Complete tenant management, automated rent tracking, payment receipts, vacancy monitoring, and financial reporting for landlords and property managers.

Node.js
MySQL
React

Education

School Management System

Student enrollment, grade management, fee tracking, timetable scheduling, parent portal, and automated report card generation.

PHP
MySQL
JavaScript

Retail

Supermarket Software System

Full POS with barcode scanning, inventory management, stock alerts, sales analytics, receipt printing, and multi-cashier support.

Python
PostgreSQL
Electron

Healthcare

Hospital Management System

Patient registration, appointment scheduling, medical records, billing, pharmacy inventory, and lab result management.

Django
PostgreSQL
React

Hospitality FREE

Hotel Management with POS

Room booking, check-in/check-out, restaurant POS, inventory, housekeeping, and guest billing — all in one, all free.

Node.js
MySQL
Vue.js

Fintech

CashLoop Systems

Mobile money payment processing, transaction tracking, M-Pesa & Airtel integration, automated reconciliation, and financial reporting.

Node.js
M-Pesa API
MongoDB

04. What's Next?

Get In Touch

Need a custom system for your business? Want the free Hotel Management software? I'm currently available for freelance work and collaborations. Whether you have a question, my inbox is always open.

< Contact Me />