Development Services

Systems built with
precision and purpose

Full-stack development for businesses, governments, and organizations that need software that actually works โ€” designed for real complexity, built to scale.

Services

What I build
and how I build it

๐ŸŒ

Web Applications

Full-stack web applications built with modern frameworks. From MVPs to enterprise-grade platforms with complex business logic.

Next.jsNestJSPostgreSQLPrisma
๐Ÿ“ฑ

Mobile Apps

Cross-platform mobile applications using React Native. Offline-first architecture, push notifications, and native device integrations.

React NativeExpoNestJS APISQLite
โš™๏ธ

Business Systems

Custom internal tools, admin dashboards, ERP modules, and management systems designed for operational efficiency.

Next.jsNestJSPostgreSQLDocker
โ˜๏ธ

Multi-tenant SaaS

Scalable SaaS platforms with tenant isolation, role-based access, billing integration, and white-label capability.

NestJSNext.jsPostgreSQLRedis
๐Ÿ”Œ

API & Integrations

RESTful APIs, webhook systems, third-party integrations, and automation pipelines that connect your tools.

NestJSNode.jsRESTWebhooks
๐Ÿš€

DevOps & Deployment

Docker containerization, VPS deployment, CI/CD pipelines, database migrations, and ongoing maintenance.

DockerNginxHetznerGitHub Actions
Technologies

The tools I
master and deploy

Frontend

  • Next.js
  • React
  • Svelte
  • React Native
  • Tailwind CSS
  • shadcn/ui

Backend

  • NestJS
  • Node.js
  • TypeScript
  • REST APIs
  • WebSockets
  • Cron Jobs

Database

  • PostgreSQL
  • Prisma ORM
  • Redis
  • SQLite
  • Database Design
  • Migrations

DevOps

  • Docker
  • Docker Compose
  • Nginx
  • Hetzner VPS
  • GitHub Actions
  • CI/CD

Mobile

  • React Native
  • Expo
  • EAS Build
  • OTA Updates
  • Offline-first
  • Push Notifications

Tools

  • Git
  • Postman
  • Figma
  • VS Code
  • Claude Code
  • Linear
How I Work

A process built for
clarity and confidence

01
01

Discovery

Deep dive into your requirements, constraints, existing systems, and desired outcomes. No assumptions made.

02
02

Architecture

Design the system architecture, database schema, and technical roadmap. Deliverables: technical spec document.

03
03

Phased Build

Iterative development with regular check-ins. Working software shipped in phases, not months of silence.

04
04

Testing

Thorough testing at unit, integration, and user levels. Edge cases documented and handled.

05
05

Deployment

Docker-based deployment to production with monitoring, backups, and runbooks.

06
06

Handover

Full documentation, code walkthrough, and a maintenance plan tailored to your team's capacity.

Industries

Sectors I've built for

๐Ÿ›๏ธ Government & NGOs
๐Ÿฅ Healthcare
โšฝ Sports Federations
๐Ÿšš Logistics & Supply Chain
๐Ÿฆ Finance & Fintech
๐Ÿข Enterprise & SME
Why Kelvin

What makes working with
me different

๐Ÿง 

Systems thinking

I design for the full lifecycle of a product, not just the first version.

๐ŸŒ

East African context

Deep understanding of local business models, connectivity realities, and operational constraints.

๐Ÿ“

Clean architecture

Code that your next engineer can read, understand, and build on.

๐Ÿ”

Iterative delivery

Real working software in your hands at every milestone, not just at the end.

๐Ÿ“

Documentation-first

Every system comes with thorough documentation. No black boxes.

๐Ÿค

True partnership

I think about your business problem, not just the technical spec. Your success is the metric.

FAQs

Development questions

Have a system to build?

Let's discuss your project requirements. No pressure โ€” just a focused conversation about what you need.