Available
for Freelance
MERN Stack | Cloud & DevOps
I’m a full-stack MERN developer
and cloud engineer with strong focus on building
reliable, scalable and well-integrated digital
systems.
I'm a Kenyan full-stack MERN developer
working across the whole stack—MongoDB, Express, React,
and Node—while also owning the infrastructure side:
Kubernetes, Google Cloud, and Firebase. My diverse skill
set allows me to deliver cohesive solutions across REST
API design, CI/CD pipelines, and third-party
integrations like QuickBooks.
Backend & API Development
Robust, well-documented REST APIs built with Node.js and Express, backed by clean MongoDB data models. I design backends that stay reliable as traffic and features grow.
REST APIs Auth & Security
Cloud & DevOps
From containerizing apps to running them reliably in production, I set up Kubernetes clusters, Google Cloud infrastructure, and Firebase backends, wired together with automated CI/CD pipelines.
Full-Stack Web Apps
End-to-end MERN applications—React frontends talking to Node/Express APIs backed by MongoDB. Fast, responsive, and built to scale from day one, with clean code that's easy to hand off or extend.
State Management Performance Optimization
Third-Party Integrations
I connect your app to the tools your business already runs on— QuickBooks, payment gateways, and other third-party APIs—so data flows cleanly between systems without manual work.
OAuth Data Sync
IoT & Hardware Integration
I connect field hardware to your software— LoRa sensors, RS-485 devices and 4G gateways talking Modbus RTU to a cloud service—so readings like tank levels and meter data land live on your dashboard, with alerts when something needs attention.
4G Gateways Live Telemetry
I help companies increase user retention by enhancing user experience.
80+
Looking
for new talent?
Swan Facilities
REST API & Payment Integration
Nauras Towers
Cloud Deployment & CI/CD
PayServe
Full-Stack MERN Application
PayServe Integrations
Payment & Accounting Integrations — QuickBooks, Zoho Books, Absa Bank, Equity Bank Sites: Altura, Netherlands Heights, NaurasWater Level Sensor
IoT Tank Monitoring — LoRa, 4G & Modbus RTU Live water tank levels for property managers inside PayServe. LoRa probes report through a 4G gateway to a Node.js service that polls the transceiver over Modbus RTU, stores readings every minute, and raises low-level, battery and offline alerts — with per-facility dashboards, history charts and CSV export. Stack: Node.js, Fastify, MongoDB, React, LoRa, USR-DR512 4G, DigitalOcean
Tools & Skills
Skills
Frontend
- React
- Responsive UI
- State Management
- PrimeReact/Bootstrap
Backend
- Node.js & Express
- MongoDB
- REST API Design
- Authentication & Security
Cloud & DevOps
- Kubernetes
- Google Cloud Platform
- Firebase
- CI/CD Pipelines
Integrations
- QuickBooks API
- Payment Gateway APIs
- Webhooks & OAuth
- Third-Party Data Sync
IoT & Hardware
- LoRa Wireless Sensors
- 4G DTU Gateways (USR-DR512)
- RS-485 Wiring
- Water Level & Meter Telemetry
Protocols
- Modbus RTU
- Modbus over TCP (4G)
- TCP Socket Servers
- HTTP / REST
Toolbox
Node.js
JavaScript / React
MongoDB
Express.js
Kubernetes
Google Cloud
Firebase
CI/CD (Jenkins/GitHub Actions)
Docker
QuickBooks API
Zoho Books API
Absa Bank API
Equity Bank Payment Gateway
Experience
May. 2026 - Present
Full-Stack MERN Developer
PayServe
May. 2023 - April. 2026
Backend & Cloud Engineer
Freelance / Contract
Dec. 2020 - Apr. 2023
MERN Stack Developer
Freelance / Contract
Mar. 2017 - Dec. 2019
Junior Web Developer
Freelancing
Recognitions
projects
completed
in 2 countries
Clients
satisfied and
repeating
Trending Design
My
design thinking process
User Research
I begin every project by understanding the audience, business goals, and market context. Through interviews, audits, and competitor analysis, I uncover the insights that guide meaningful design decisions.
Define Problems
Using research findings, I identify core user pain points and business challenges. This stage helps prioritize features, establish clear objectives, and align stakeholders on what success looks like.
Design & Prototype
From wireframes to high-fidelity mockups, I craft visual and functional design solutions. Prototypes help visualize flows and interactions early—whether it’s a landing page, app, or full website.
Evaluation & Testing
I validate designs through usability testing, feedback loops, and technical reviews. This ensures the final product isn’t just beautiful, but intuitive, performant, and ready for development or launch.
Chester built
something better than we
could have imagined
Caroline Jemeli
Head of Marketing, DPO Pay
0+
Engaged and counting
Take a look
at my Features Posts
The place that I share everything related to
design trends, tips and more.
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Web Design vs Web Development: What’s the Difference and Why It Matters
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