About CDenn

Who is CDenn?

CDenn is the professional brand name of Dennis Ndung'u, a full-stack software developer based in Nairobi, Kenya. The name CDenn combines the initial "C" from his middle name with "Denn" from Dennis, creating a distinctive identity for his freelance and consulting work in software development.

CDenn is not affiliated with the scientific term "cDENN", which refers to the central conserved module of the DENN protein domain in molecular biology. CDenn is purely a software development brand focused on web applications, fintech systems, and AI integration.

What CDenn Does

CDenn specialises in building modern, performant web applications with a focus on:

• Next.js & React Development — Server-side rendering, App Router architecture, and optimised frontend performance
• Fintech & Payment Systems — M-Pesa Daraja API integrations, STK push implementations, and payment reconciliation systems for East African markets
• AI-Integrated Applications — Leveraging OpenAI and other AI APIs to build intelligent features like the Email Refiner Chrome extension
• Offline-First Applications — Progressive web apps and mobile applications designed for low-connectivity environments
• MVP Development — Helping startups go from idea to production-ready product quickly and efficiently

Technical Expertise

With a strong foundation in TypeScript and modern JavaScript, CDenn delivers production-grade code across the full stack:

Featured Work

Some notable projects from the CDenn portfolio include:

• Email Refiner — An AI-powered Chrome extension that transforms email tone inside Gmail and Zimbra without leaving the compose window
• Ndoa Plan — An offline-first wedding coordination platform built for Kenyan events, featuring M-Pesa payment reconciliation and real-time collaboration
• Sefer — A clean, feature-rich PDF reader for Android with persistent annotations and library management

View the full portfolio at cdenn.dev.

Working With CDenn

CDenn is available for full-time remote positions, freelance contracts, and consulting engagements. Whether you need:

• A complete MVP built from scratch
• M-Pesa integration for your existing platform
• Frontend architecture consulting
• AI feature development

Get in touch through the contact form to discuss your project.