Senior C# Developer - (PERMANENT)

Core Description of the role

• As a Senior C# Developer in the SGT WebApps team, you will be responsible for the analysis, development, and maintenance of various inhouse Web Applications developed in .NET.

Output/Core Tasks

Software Design & Architecture

• Apply Clean Architecture, SOLID principles, and domain-driven design (DDD) where appropriate.
• Participate in architectural decision-making and solution design sessions.
• Review and improve existing system designs, identifying opportunities for refactoring and modernization.

Development & Implementation

• Build high-quality backend services using C# (.NET 6/7/8), Entity Framework Core, and modern development practices.
• Develop RESTful APIs, microservices, and distributed systems.
• Implement efficient database interactions using SQL Server, PostgreSQL, or other RDBMS technologies.
• Ensure consistent use of design patterns, coding standards, and architectural guidelines.
• Improve observability using structured logging, tracing, and monitoring tools.

Technical Leadership & Collaboration

• Mentor junior and intermediate developers through code reviews, pair programming, and knowledge-sharing.
• Collaborate with Product Owners, Business Analysts, and QA engineers to refine requirements and deliver solutions.
• Contribute to technical roadmap planning and long-term system strategy.
• Lead investigations into complex technical issues and propose well-considered solutions.

Quality Assurance & Testing

• Ensure unit tests, integration tests, and automated test coverage are implemented for all new features.
• Conduct peer reviews and enforce best practices through code quality checks.
• Identify performance bottlenecks and implement optimizations.

Support & Maintenance

• Assist in troubleshooting complex production issues and provide root cause analysis.
• Improve system resilience and reliability through proactive enhancements.
• Participate in production release planning and support rotations when required.

Cloud (Azure/AWS)

• Design and build cloud-native solutions using Azure or AWS services.
• Implement serverless functions, message queues, event buses, and cloud storage.

Frontend Development

• Develop modern web interfaces using React/Angular.

Requirements

Qualifications

• Grade 12
• An appropriate IT qualification (Diploma/Degree) will be a strong recommendation.

Experience

• 5 years’ experience in software development.
• Experience in life assurance will be an advantage.
• Experience in designing solutions.

Experience in working with the following

• C# and .NET 8+
• NET Core (Web API, MVC)
• Entity Framework Core
• LINQ
• MS SQL Server (2019+) and T-SQL
• Stored procedures, indexing, query optimization
• SQL Server Reporting Services (SSRS)
• RESTful services (consumption and implementation)
• Web Services (WCF/REST)
• Message formats: JSON / XML
• Unit Testing

Knowledge

• Working knowledge of Visual Studio
• Systems analysis and design concepts
• Source Control concepts (trunk-based development)
• SOLID / Clean Code Principles
• Database architecture and design
• Strong SQL knowledge including performance tuning
• IIS

Competencies

• Strong analytical & numerical ability and strong attention to detail.
• Good problem solving/debugging skills.
• Good written and verbal skills.
• Oriented toward achieving quality results.
• Lifelong learning oriented.
• Thrives under pressure.

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