We are seeking an experienced C# Back-End Developer to join our development team and work closely with a Johannesburg-based customer. The successful candidate will be responsible for designing, building, and maintaining integration-focused back-end systems, ensuring reliability, scalability, and performance.

This role is ideal for a developer who enjoys working on system integrations, APIs, and cloud-based solutions in a professional, customer-facing environment.

Key Responsibilities

Design, develop, and maintain back-end applications and integration services using C# and .NET

Build and consume RESTful APIs and third-party system integrations

Collaborate with the customer’s technical and business teams to understand integration requirements

Write clean, maintainable, and well-documented code

Troubleshoot, debug, and optimise existing systems

Participate in code reviews and contribute to best practices

Use Azure DevOps for source control, CI/CD, and work item tracking

Support cloud-based deployments and environments (Azure preferred)

Required Skills & Experience

5+ years of hands-on experience with C# (.NET / .NET Core)

Strong back-end development experience

Proven experience building integration software

Solid understanding of: REST APIs, JSON / XML, SQL databases (e.g. SQL Server)

Experience with version control systems (Git)

Strong problem-solving and analytical skills

Ability to work independently and communicate effectively with customers

Advantageous (Nice to Have)

Experience with Microsoft Azure (App Services, Functions, Storage, etc.)

Experience with Azure DevOps pipelines and deployments

Exposure to microservices architecture

Experience integrating with ERP, CRM, or financial systems

Knowledge of security best practices for APIs and integrations