Full-stack engineer · Nairobi / remote

Software systems built to ship.

Full-stack development, payment integrations, and maintainable codebases using modern JavaScript and Python stacks.

PRODUCT ENGINEERING

CI/CD & RELIABILIT

PAYMENT SYSTEMS

10+

Deployed Projects

Years Experience

Multiple

Payment Integrations

// Selected Work

Success Stories

Systems built to solve real problems — and keep running.

Organica Ltd

Business Portfolio

A premium digital platform for a Kenyan agribusiness connecting fresh produce, dried products, and raw honey with local and international buyers.

NextJSTailwind CSSSEOMailgun JS

View Case Study

QU Farms Limited

Business Portfolio

Qufarms 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 CSSSEOContent Management

View Case Study

Coffea Academy LMS

SAAS

A 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 QueryNextAuthSwaggerDockerBullMQAWS S3TipTapTailwind CSSShadcn UIZustandReact Hook Form

View Case Study

Portfolio Designs V2

UI/UX Design

Figma designs for my personal portfolio.

FigmaMaterial Design

View Case Study

View All Projects

// 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Users leave when experiences feel slow, confusing, or outdated.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.

// feedback

What Clients Say

Real feedback from teams I've worked with across tech and coffee projects.

“Simon delivered a robust payment system that handles 50k+ transactions daily. His attention to detail and understanding of African payment ecosystems is unmatched. We went from fragile MVP to production-grade in 4 months.”

Simon

QUFarms

// 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

hello@simonmwangi.com +254 726 869 778

Nairobi, Kenya

Connect

I typically respond within 24 hours. If your project is urgent, mention it in your message.