Business systems
Replace repetitive manual workflows with software designed around your operations.
Full-stack engineer · Nairobi / remote
Software systemsbuilt to ship.
I help startups and growing businesses turn messy ideas into production-ready software, from web platforms to M-Pesa and Stripe payments. I built Coffea Academy, a live SaaS, end-to-end.
PRODUCT ENGINEERING
CI/CD & RELIABILIT
PAYMENT SYSTEMS
10+
Deployed Projects
6+
Years Experience
Multiple
Payment Integrations
Services
Software built around your business
Start with the problem you need to solve, not a list of technologies.
Digital products
Turn a product idea into a focused web application or MVP.
Commerce & payments
Build ordering experiences and integrate payment workflows that fit your business.
// Selected Work
Selected projects
Systems built to solve real problems — and keep running.
Organica Ltd
Business PortfolioA premium digital platform for a Kenyan agribusiness connecting fresh produce, dried products, and raw honey with local and international buyers.
NextJSTailwind CSSSEO+1 more
Felix Ouma — Personal Brand & Portfolio Website
PortfolioPersonal website for Felix Ouma, Kenya's 2025 Barista Champion and WBC Milan competitor. Built to establish his professional brand and drive consulting inquiries.
NextJSTailwindCSSShadCn UI+6 more
QU Farms Limited
Business PortfolioQufarms is a modern agritech platform that bridges technology and agriculture, delivering a fast, scalable, and intuitive digital experience for farmers, agribusinesses, and consumers through a responsive, performance-focused web application.
NextJSShadCN UITailwind CSS+2 more
Coffea Academy LMS
SAASA full-stack e-learning platform for coffee professionals and enthusiasts. Built with Next.js and NestJS, covering everything from barista fundamentals to roast development — taught by Kenya's 2025 Barista Champion.
NextjsNestJsTanstack Query+10 more
Bean Relay E-commerce
SAASSell coffee, accept payments, and manage repeat orders from one connected platform.
NextJsTailwindCSSRedux+9 more
How I work
From problem to working solution
- 01
Understand
Clarify your objectives, users and constraints before defining the scope.
- 02
Build
Develop in focused stages, with feedback along the way.
- 03
Launch
Test, deploy and agree on the next steps for maintaining the system.
// feedback
What Clients Say
Real feedback from teams I've worked with across tech and coffee projects.
“Organica Packhouse Ltd has been impressed by The delivery of the Company Website done by Simon Mwangi which has helped us with Clientele and Export Market Delivery and Customer Feedbacks.”
Organica Packhouse Ltd
Director
“Simon is a dedicated and talented developer. With the responses and clients we are getting from our platform, he created a highly responsive, market-driven Agri-food website for us.”
Simon
QU Farms | Director
// Tools of the Trade
Tech Stack
Every layer of your product deserves the same care. Here's how I approach each one.
The Problem
Users leave when experiences feel slow, confusing, or outdated.
Interfaces That Convert Browsers into Buyers
I build fast, accessible interfaces using modern frameworks and design systems. Every interaction is intentional—designed to guide users toward action.
Technologies
ReactNext.jsVue.jsTypeScriptJavaScriptTailwindCSSMaterial UIBootstrapZustandRedux ToolkitReact QueryFigma
// faq
How I Work
Common questions from founders and teams I work with.
It can be. I'll tell you honestly on our first call whether your scope and stage are a good fit — I'm not going to take on a project I don't think I can serve well. I've built a product from zero myself (I'm the solo technical co-founder of Coffea Academy, a live SaaS platform), so I know what "get this working now, without boxing in year two" actually looks like in practice.
Insights
Explore how I think and build
Articles on software architecture, payments and coffee technology.
Read my articles// Contact
Let's Build Something
Whether you need a payment system, a scalable platform, or help fixing what's broken—I'm here to help.
Contact Info
I typically respond within 24 hours. If your project is urgent, mention it in your message.