.NET 8.0

CaseConverter API

Culture-aware string transformation microservice built with .NET 8.0, exposing slugification and case-conversion endpoints, containerized and deployed on Kubernetes with full NUnit test coverage.

Overview

CaseConverter API is a lightweight, production-ready microservice for string transformation with proper multi-cultural support. Built on .NET 8.0 following RESTful principles and a clean, service-layer-based design, it isolates transformation logic behind well-documented HTTP endpoints. The service is containerized and deployed on Kubernetes, backed by a full NUnit test suite for reliability.

What It Does

The service exposes four core transformation endpoints: URL-safe slugification for SEO-friendly URLs, plus culture-aware uppercase, lowercase, and title-case conversions. Because casing rules differ by locale, it applies the correct culture semantics so characters unique to languages like Turkish and German transform correctly rather than being mangled by invariant defaults.

Tech Stack

.NET 8.0ASP.NET CoreRESTful APIKubernetesDockerSwagger/OpenAPINUnitDependency Injection

GitHub

Key Features

Multi-language character support with culture-specific transformations

RESTful API design with comprehensive Swagger/OpenAPI documentation

Production-grade error handling and validation

Containerized deployment with Kubernetes orchestration

Full unit test coverage with NUnit framework

CORS-enabled for seamless frontend integration

URL-safe slugification for SEO-friendly URLs

Culture-aware case conversions (uppercase, lowercase, title case)

Technical Highlights

→Clean, dependency-injected architecture with a dedicated service layer for maintainability

→Culture-aware transformation logic using explicit CultureInfo rather than invariant defaults

→Comprehensive NUnit test suite covering transformation edge cases across locales

→Swagger/OpenAPI integration for self-documenting, explorable endpoints

→Configured CORS policies enabling secure cross-origin frontend integration

→Multi-stage Docker image orchestrated on Kubernetes with self-healing and scaling

→RESTful design with correct HTTP verbs, status codes, and resource semantics

→Production-grade input validation and error handling on every endpoint

Key Achievements

Built production-ready microservice with enterprise-grade reliability

Achieved full test coverage with comprehensive NUnit test suite

Implemented culture-aware transformations for multiple languages

Successfully deployed on Kubernetes infrastructure

Created developer-friendly API with complete Swagger documentation

Impact & Results

CaseConverter API demonstrates practical experience with modern cloud-native development practices, microservices architecture, and DevOps workflows. The project showcases expertise in building scalable, containerized services with proper testing, documentation, and deployment strategies. It serves as a reliable utility service that can be integrated into larger systems requiring string transformation capabilities.