Kelvin Kihiu – .NET Developer Portfolio

About Me

I'm a passionate .NET developer with over 7 years of experience building modern, scalable applications using C#, ASP.NET Core, Blazor, and cloud-native tools. I specialize in crafting clean architectures for complex domains, including healthcare systems like MedicentreV3, and ERP solutions with deep manufacturing logic. I enjoy bridging the gap between infrastructure, APIs, and great developer experiences.

Healthcare Industry Experience

With extensive experience in the healthcare industry, I have led development on mission-critical systems such as MedicentreV3, a hospital management platform rebuilt on modern .NET architecture with FHIR compliance. I’ve worked on EHR integrations, clinical workflows, lab result processing, patient vitals, and AI-assisted reporting systems, enabling clinicians and admins to operate with speed, accuracy, and compliance.

Skills

.NET & C#

.NET 8

ASP.NET Core

Blazor

Razor Pages

Building performant web applications and services using clean architecture and MediatR.

Cloud & DevOps

Docker

GCP

Azure

Kubernetes

Deploying and orchestrating containerized microservices across cloud-native platforms using Kubernetes.

Databases

PostgreSQL

SQL Server

MongoDB

Redis

Designing and managing both relational and NoSQL data stores for transactional and analytical systems.

Infra & Tools

Linux Servers

Git

Azure DevOps

CI/CD

Managing Ubuntu-based infrastructure, automating deployments and implementing secure DevOps pipelines.

Domain Design

DDD

CQRS

MediatR

Implementing robust business logic and modular solutions with clean separation of concerns.

Frontend & UX

JavaScript

TailwindCSS

Flutter

Building responsive dashboards and cross-platform interfaces for reports and visualization tools.

Projects

MedicentreV3

Cloud-based hospital management system rebuilt from legacy WinForms to .NET Core. Supports plugin extensibility, clean architecture, FHIR compliance, and multi-module operations.

ProMastr

Property management SaaS built using .NET 9 and Blazor WASM. Handles property, unit, tenant, rent, and eviction workflows with secure APIs.

Smart Reports (AI)

Dynamic reporting engine powered by Semantic Kernel for conversational, prompt-driven report generation with chart and table outputs.

HIMP Platform

Internal infrastructure management platform. Tracks quotas and health of GCP-based servers using Prometheus, Grafana, RabbitMQ, and Redis.

LoyonERP

Modular ERP system focused on manufacturing workflows. Built with .NET Core, Razor Pages, and custom domain logic for inventory, BOMs, and production.

PricingApp

A .NET service for dynamic product pricing and costing logic, designed for internal integration across ERP and e-commerce platforms.

ASF Manager

System for provisioning and managing customer accounts across multiple environments, integrated with core services and infrastructure APIs.

Support Portal

A customer-facing self-service platform providing knowledge-base access and the ability to raise and track support tickets without human intervention.

Learning Management System (LMS)

Spearheaded the design and development of an LMS enabling structured training programs, course progress tracking, and certification issuance.

Partner Portal

Led the development of a portal that enables partners to onboard clients, track usage, access tools, and engage with core platform APIs securely.