Full-stack engineer.
Fintech systems.
Built for scale.
I build production-grade fintech infrastructure and AI-integrated products for teams across East Africa and globally. Next.js · M-Pesa · TypeScript · Node · PostgreSQL
Current Focus
Ndoa Plan — offline-first event platform
About Me
I'm a full-stack software developer based in Nairobi, Kenya, with 3+ years building production-grade web applications and fintech systems. My work spans Next.js application architecture, M-Pesa payment integrations, AI-powered tooling, and offline-first mobile apps - across SaaS platforms, browser extensions, and event-tech products.
I've led frontend architecture on multi-tenant bancassurance platforms, built Chrome extensions that inject into live Gmail DOM, and engineered offline-first systems that reconcile M-Pesa STK callbacks in real time. I work across the full stack - from database schema and API design to component systems and deployment.
My Approach: Understand the problem deeply before writing a line of code. Ship fast without cutting corners on architecture. Keep systems maintainable for the team that inherits them.
Build systems that last. Ship products that work. Own the outcome.
Location
Nairobi, Kenya · Remote-friendly
Availability
Open to roles, contracts & consulting
Tech Stack
Frontend
Backend
Mobile
Tools
Experience
Frontend Engineer
Jan 2025 - PresentE&M Technologies
- ·Led frontend architecture and development of the core product using React and Next.js, improving page load performance by 40%
- ·Designed and implemented a scalable design system adopted across 3+ product teams, ensuring UI consistency and faster feature delivery
- ·Collaborated with backend and product teams to translate business requirements into performant, user-centric interfaces
- ·Improved maintainability of legacy code by introducing TypeScript patterns and reusable component structures
React, Next.js, TypeScript, TailwindCSS, REST APIs
Featured Solutions
Code under NDA
Bancassurance Platform
Multi-tenant SaaS platform for managing insurance policy lifecycles across bancassurance channels. Built for a financial services provider operating across multiple bank partnerships.
The Challenge
Multi-tenant architecture with secure role-based access, 10k+ concurrent users, and high-performance financial workflows - all while maintaining strict data isolation between tenants.
The Solution
Designed a theme-aware component library with tenant-scoped configs, JWT-based role permissions with tenant-boundary enforcement, and a virtual-scroll data grid that handled 50k+ policy records without performance degradation.
The Results
Email Refiner
Open SourceAI-powered Chrome extension that enhances email writing in Gmail and Zimbra with real-time tone transformation and preview.
The Challenge
Integrating seamlessly into third-party email clients while maintaining performance, security, and a smooth user experience within dynamic DOM environments.
The Solution
Used MutationObserver to detect compose windows across both clients, isolated the React UI in a shadow DOM to prevent style conflicts, and offloaded OpenAI calls to a background service worker.
The Results
Ndoa Plan
OngoingOffline-first wedding coordination platform built for Kenyan weddings, with M-Pesa payment reconciliation, multi-event planning, budget tracking, and real-time day-of execution tools.
The Challenge
Building a reliable planning tool for low-connectivity environments while keeping financial data consistent across offline-first sync, M-Pesa callbacks, and a multi-user role system.
The Solution
Implemented a Dexie-based local-first store with a background sync queue, conflict resolution strategy using server timestamps, and a webhook handler for M-Pesa Daraja callbacks that reconciled payments against guest contribution records.
The Results
Let's Build Something Great.
Whether you have a project in mind, want to explore a collaboration, or just want to talk tech - I'm open to it. Fill in the form and I'll get back to you.
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