Senior C#/.NET Engineer

NNW Tech Solutions; Johannesburg; On-site; ZAR 900,000 - 1,400,000; Full time

Job summary

NNW Tech Solutions in Johannesburg, South Africa, is seeking a Senior C# .NET Software Engineer to join its core payments and banking technology team. You will help build secure, scalable cloud-native solutions using C# and Azure, contributing across design, API development, and production support.

The role requires 8+ years of software development experience, expertise in C#, ASP.NET APIs, TypeScript, Angular, Git, RESTful APIs, and familiarity with Azure DevOps, CI/CD, Kubernetes, and SQL

Qualifications

• 8+ years’ software development experience.
• Strong proficiency in C# (.NET Framework, .NET Core, .NET 6+) with a focus on building ASP.NET APIs.
• Experience with TypeScript and Angular (2+)
• Solid understanding of Git for source control
• Strong grasp of scalable application design principles and RESTful APIs
• Experience writing unit and integration tests
• Exposure to CI/CD pipelines and automation practices
• Experience deploying applications in containerised environments (Kubernetes, Azure)
• Ability to support, monitor, and troubleshoot production systems
• Experience with Azure DevOps (Repos and Pipelines)
• Hands-on experience with Azure cloud services
• Microsoft SQL Server
• Certifications (required or willingness to obtain)

Responsibilities

• Work across the full development lifecycle, contributing to system design and API development.
• Provide production support and troubleshoot issues in collaboration with the team.
• Build scalable, cloud-native solutions using C# and Azure.
• Contribute to API design, testing, and production readiness.
• Participate in code reviews and maintain high engineering standards.

Tools

C#

.NET Framework

.NET Core

ASP.NET APIs

TypeScript

Angular

Git

RESTful APIs

CI/CD

Kubernetes

Azure

Azure DevOps

SQL Server

Job description

Johannesburg, South Africa | Posted on 17/03/2026

Connecting top-tier talent with cutting-edge opportunities in the tech world.

Job Description

Our client, a leading player in the banking and financial services space, is seeking aSenior C# .NET Software Engineer to join their core payments and banking technology team. This role sits at the heart of critical systems that enable the secure and efficient movement of money, with a strong focus on building scalable, cloud-native solutions using C# and Azure.

The successful candidate will work across the full development lifecycle, contributing to system design, API development, and production support, within a collaborative, high-performing environment that values technical excellence, ownership, and open engagement.

Requirements

8+ years’ software development experience

Strong proficiency in C# (.NET Framework, .NET Core, .NET 6+) with a focus on building ASP.NET APIs

Experience with TypeScript and Angular (2+)

Solid understanding of Git for source control

Strong grasp of scalable application design principles and RESTful APIs

Experience writing unit and integration tests

Exposure to CI/CD pipelines and automation practices

Experience deploying applications in containerised environments (Kubernetes, Azure)

Ability to support, monitor, and troubleshoot production systems

Experience with Azure DevOps (Repos and Pipelines)

Hands-on experience with Azure cloud services

Microsoft SQL Server

Certifications (required or willingness to obtain)