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Salary
≈ $36k – $69k per year (Estimated)
Location
Hybrid (Cape Town, South Africa)
Seniority
Senior · 7+ years exp

Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Sep 8, 2026. iOCO scores A on the Alion truth index.

Overview
Company
Impact
Profile match
iOCO is a South African technology company offering cloud, technology and managed services to business customers. Its job ads cover sales, product design, desktop support, SQL development and application support roles. The company is headquartered in Johannesburg, South Africa.
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.NET Core 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)
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