Senior .Net Developer (with Blazor) (iOCO0119)

iOCO Limited; Cape Town; Hybrid; ZAR 900,000 - 1,300,000; Part time

Job summary

iOCO Limited in Cape Town is seeking a Senior .NET Developer to design, build, and maintain enterprise-grade applications using C#, .NET Core, and Blazor.

You will work in a hybrid environment, mentoring junior developers, aligning with Agile practices, and leveraging Azure services (B2C, Blob Storage) and MediatR/CQRS to deliver scalable solutions.

Qualifications

• 7+ years of software development experience
• 5+ years with modern .NET technologies
• Strong C# and .NET Core development
• Experience with Blazor Server and Blazor WASM
• Experience designing reusable UI components
• Experience with Azure B2C, Blob Storage, and DevOps
• Familiarity with MediatR and CQRS
• Secure coding practices and audit logging
• Agile/Scrum experience
• Leadership experience
• Experience on enterprise-grade software projects
• Open-source contributions

Responsibilities

• Design, develop, and maintain scalable web apps using C#, .NET Core, Blazor.
• Build reusable UI components with Fluent UI or MudBlazor.
• Develop back-end services with ASP.NET Core following clean architecture.
• Integrate Azure B2C authentication and Azure Blob Storage.
• Implement Entity Framework Core with LINQ and migrations.
• Build CQRS pipelines using MediatR.
• Implement audit logging, error handling, security.
• Contribute to CI/CD with Azure DevOps.
• Collaborate with cross-functional teams.
• Mentor junior developers and stay updated with tech trends.

Skills

C# programming

.NET Core

Blazor

UI components

Azure services

MediatR CQRS

Secure coding

Agile/Scrum

Leadership

Problem solving

Open source

Tools

Fluent UI

MudBlazor

Azure DevOps

Azure Blob Storage

ASP.NET Core

Job description

We are looking for a Senior .Net Developer who has evolved with the tech landscape, demonstrating strong adaptability and deep development knowledge. You’ll play a key role in designing, building, and maintaining enterprise-grade applications using modern .Net technologies—particularly with C#, Blazor, and the Azure ecosystem. If you thrive on clean code, secure practices, reusable components, and scalable architectures, this role is for you.

What you'll do:

• Design, develop, and maintain scalable web applications using C#, .NET Core, and Blazor (Server and WASM).
• Build and enhance component-based UIs using Fluent UI (preferred) or MudBlazor, ensuring reusability and performance.
• Develop back-end services using ASP.Net Core, following clean architecture principles.
• Integrate with Azure B2C for authentication and manage secure file transfers using Azure Blob Storage.
• Implement Entity Framework Core for data persistence, including LINQ queries and database migrations.
• Build CQRS-based request pipelines using MediatR.
• Implement robust audit logging, error handling, and security mechanisms.
• Contribute to CI/CD processes using Azure DevOps for seamless builds, testing, and deployments.
• Collaborate with cross-functional teams including UI/UX designers, QA engineers, and product managers.
• Stay up-to-date with evolving tech stacks and mentor junior developers.

Your Expertise:

• 7 years of overall software development experience with at least 5+ years working with modern .NET technologies.
• Deep expertise in C# programming and .NET Core development.
• Solid experience with Blazor Framework, including Blazor Server and Blazor WebAssembly.
• Proficient in creating modular, reusable UI components using Fluent UI or MudBlazor.
• Skilled in Entity Framework Core, including writing LINQ queries and handling DB migrations.
• Hands‑on experience with Azure services, particularly Azure B2C, Blob Storage, and Azure DevOps.
• Familiarity with MediatR and CQRS design patterns.
• Strong understanding of secure coding practices, including audit logging, secure file transfers, and error handling.
• Excellent problem‑solving skills and a proactive attitude toward learning and applying new technologies.
• Experience working in Agile/Scrum environments.
• Prior involvement in enterprise‑grade software projects.
• Contributions to open‑source or developer communities.
• Proven experience filling a leadership role.

Technical overview of the required skills:

• C# and .NET Core
  • Deep understanding of C# is foundational.
  • Familiarity with ASP.NETCore for back-end services
• Blazor Framework
  • 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 Ecosystem
  • Azure B2C for authentication and authorization.
  • Azure Blob Storage for file handling.
  • 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

Other information applicable to the opportunity:

• Contract position(6 months)
• Location: Cape Town (hybrid way of work)
  
• Level: Senior (7+ years experience)