Senior Backend Developer (.NET, C#) (Hybrid - JHB) at Datafin Recruitment

ENVIRONMENT:

• A Software Solutions company is currently seeking an experienced C# Back-End Developer to join their 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.

DUTIES:

• 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)

REQUIREMENTS:

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