Mid-Level C# Developer

Our client is looking for a Mid-Level Software Developer with solid backend development experience to contribute to production systems within a payment-focused technology environment. The successful candidate will work primarily with C#/.NET, relational databases and REST APIs while building the technical foundation required to progress into a senior development position.

What You’ll Be Responsible For

• Deliver backend functionality using C#/.NET.
• Develop reliable and maintainable code using asynchronous programming and appropriate transactional patterns.
• Build and maintain stored procedures using Oracle PL/SQL or PostgreSQL.
• Integrate RESTful services and handle authentication, errors, retries, pagination and timeouts correctly.
• Implement idempotent processing where required.
• Develop meaningful unit tests covering normal, boundary and failure scenarios.
• Contribute to pull-request reviews and provide useful technical feedback.
• Maintain clear system documentation and operational runbooks.
• Follow secure development practices and PCI-DSS Requirement 6 principles.
• Ensure cardholder data is excluded from application logging.
• Maintain dependencies and follow development security checks.
• Use Git feature branches and clear commit and pull-request descriptions.
• Contribute constructively during Agile ceremonies.
• Develop understanding of cloud deployment and database performance considerations.
• Participate in technical leadership, architecture documentation and mentoring as experience develops.

Essential Experience

• NQF 6 Diploma or NQF 7 Degree in IT, Computer Science, Software Engineering or a related field.
• 3–5 years' professional backend development experience.
• Strong C#/.NET experience in a production environment.
• 2+ years' experience developing SQL queries and stored procedures in Oracle or PostgreSQL.
• 2+ years' experience writing and maintaining unit tests.
• 2+ years' experience integrating REST APIs.
• 2+ years' experience with Git-based development and pull-request workflows.

Technical Competencies

• C#/.NET, async/await and error handling.
• Transactional processing and idempotency.
• Oracle SQL/PLSQL or PostgreSQL.
• Stored procedure development.
• Indexing and basic execution-plan analysis.
• NUnit or xUnit.
• REST authentication and integration patterns.
• 4xx/5xx handling, retries with backoff, pagination and timeouts.
• Git branching, pull requests and code reviews.
• Runbooks and technical documentation.
• Containers and serverless fundamentals.
• Stateless application design.
• Environment-based configuration.
• Connection pooling and efficient retry strategies.
• Query-performance awareness, including N+1 issues.

Advantageous

• Experience within fintech, payments or financial services.
• Azure Developer Associate, AWS Developer Associate or comparable certification.
• Exposure to cloud-based deployment environments.
• Interest in mentoring and technical leadership.

Only shortlisted candidates will be contacted.

Submit your CV to Sign in to view email or call 031 350 4018.

Visit our website for more exciting career opportunities: https://tumaini.co/

Correspondence will only be conducted with short listed candidates. Should you not hear from us within 4 days, please consider your application unsuccessful.