Senior C#. Net Developer (Blazor)

Sabenza IT & Recruitment; Cape Town; On-site; ZAR 900,000 - 1,500,000; Full time

Job summary

Sabenza IT & Recruitment in Cape Town is seeking a Senior Full Stack Developer to build a modern, component-driven application using C#, .NET Core, and Blazor. Youll work across backend APIs, rich front-end interfaces, and cloud-based Azure services in a collaborative engineering environment focused on quality and performance.

The role emphasizes clean architecture, reusable UI components, and scalable backend services, with a strong focus on security and efficient logging.

Qualifications

• Deep understanding of C# is foundational.
• Proficiency with ASP.NET Core for backend services.
• Experience with Blazor Server and Blazor WASM.
• Knowledge of component-based architecture and lifecycle.

Responsibilities

• Develop full-stack features using C#, .NET Core and Blazor.
• Implement clean architecture and reusable UI components.
• Integrate with Azure services for authentication, data and deployments.
• Collaborate in a team with CI/CD via Azure DevOps and ensure quality.

Skills

C# proficiency

Full stack mindset

Clean architecture

UI component design

CQRS pattern

Security practices

Performance optimization

Tools

ASP.NET Core

Blazor Server/WebAssembly

Fluent UI

MudBlazor

Azure DevOps

Entity Framework Core

Azure B2C

MediatR

Job description

Cape Town, South Africa | Posted on 07/09/2026

We are on the hunt for a Senior Full Stack Developer to join a fast-paced, high-impact project building a modern, component-driven application using C#, .NET Core, and Blazor.

This role requires strong full-stack capability, with a focus on clean architecture, reusable UI components, and scalable backend services.

You’ll work across backend APIs, rich front-end interfaces, and cloud-based Azure services in a collaborative engineering environment focused on quality and performance.

Requirements

• Deep understanding of C# is foundational.
• Familiarity with ASP.NET Core for backend services
• Proficiency in both Blazor Server and Blazor WebAssembly (WASM).
• Understanding of component-based architecture and lifecycle

UI Libraries and Design Systems:

• Experience with Fluent UI (preferred) or MudBlazor
• Ability to build reusable UI components like grids, buttons, and menus

Entity Framework Core:

• For data access and ORM (Object-Relational Mapping).
• Includes DB migrations and LINQ queries.
• Azure B2C for authentication and authorization.
• Azure DevOps for CI/CD pipelines and deployment.

MediatR and CQRS:

• Implements Command Query Responsibility Segregation (CQRS) patterns for request handling

Security and Logging:

• Audit logging of database changes.
• Secure file transfers and error handling.