Senior Associate Developer – C#/.NET

CF & I Consulting; Cape Town; On-site; ZAR 700,000 - 745,000; Full time

Job summary

CF & I Consulting in Cape Town is seeking a Senior Associate Developer to join the IT team. The role focuses on C#/.NET development and modernisation of a logistics platform, spanning legacy VB.NET to modern .NET technologies.

You will design architecture, own development standards, and drive solutions through the lifecycle with strong DevOps and collaboration with stakeholders. This is a hands-on senior position requiring leadership in complex production scenarios.

Qualifications

• 7+ years' relevant software development experience.
• Strong C# and .NET development experience.
• Experience across .NET Framework and modern .NET/Core.
• Proven experience modernising or migrating legacy applications.
• Strong understanding of software architecture, design principles and development standards.
• Seasoned Azure DevOps experience.
• Advanced SQL Server experience including performance optimisation.
• Experience with ASP.NET MVC, Web API and IIS.
• Strong debugging, troubleshooting and production support capability.
• Experience working in an Agile development environment.
• Good communication and stakeholder engagement skills.

Responsibilities

• Designing, developing and maintaining enterprise applications using C# and .NET.
• Modernising legacy VB.NET, .NET Framework and Windows Services into modern C#/.NET solutions.
• Designing application architecture and applying appropriate software development principles and patterns.
• Developing and maintaining ASP.NET MVC, APIs and IIS-hosted applications.
• Working extensively with Microsoft SQL Server, including stored procedures, functions, indexing, performance tuning and troubleshooting.
• Using Azure DevOps for source control, branching, pull requests, pipelines, builds and deployments.
• Supporting CI/CD and automated testing practices.
• Troubleshooting production issues, performing root‑cause analysis and implementing sustainable solutions.
• Working closely with developers, business stakeholders and other technical teams.

Skills

C#/.NET

Azure DevOps

SQL Server

ASP.NET Web API

Architecture & Design

Agile

Communication

Debugging

Job description

Senior Associate Developer – C#/.NET

Cape Town | R700,000 – R745,000 CTC

Our client is looking for an experienced Senior Associate Developer to join their IT team in Cape Town.

This is an opportunity for a seasoned C#/.NET developer to play an important role in the modernisation of a business-critical logistics platform, working across legacy and modern Microsoft technologies.

We are looking for someone who can do more than develop and maintain applications. You should be comfortable designing code architecture, applying sound development principles and taking ownership of solutions through the development and deployment lifecycle.

The role

You will be involved in:

• Designing, developing and maintaining enterprise applications using C# and .NET

• Modernising legacy VB.NET, .NET Framework and Windows Services into modern C#/.NET solutions

• Designing application architecture and applying appropriate software development principles and patterns

• Developing and maintaining ASP.NET MVC, APIs and IIS-hosted applications

• Working extensively with Microsoft SQL Server, including stored procedures, functions, indexing, performance tuning and troubleshooting

• Using Azure DevOps for source control, branching, pull requests, pipelines, builds and deployments

• Supporting CI/CD and automated testing practices

• Troubleshooting production issues, performing root‑cause analysis and implementing sustainable solutions

• Working closely with developers, business stakeholders and other technical teams

What we're looking for

You will need:

• 7+ years' relevant software development experience

• Strong C# and .NET development experience

• Experience across .NET Framework and modern .NET/Core

• Proven experience modernising or migrating legacy applications

• Strong understanding of software architecture, design principles and development standards

• Seasoned Azure DevOps experience – this is important

• Advanced SQL Server experience, including performance optimisation

• Experience with ASP.NET MVC, Web API and IIS

• Strong debugging, troubleshooting and production support capability

• Experience working in an Agile development environment

• Good communication and stakeholder engagement skills

Advantageous

Experience with any of the following would be beneficial:

• Azure Key Vault

• Microsoft Graph API

• Azure Artifacts / NuGet

• MAUI / Xamarin

• SSIS / SSAS / Crystal Reports

• BizTalk / EDI

• K2 / Nintex Automation

• Docker / containerisation

• Azure cloud services

What will set you apart

We are particularly interested in developers who have progressed beyond simply delivering code and can demonstrate technical ownership — particularly in architecture, development standards, DevOps and solving complex production problems.

Please note that we will only consider applicants who meet the minimum requirements outlined above. If you do not hear from us within 14 days, please regard your application as unsuccessful.