C# (API) Developer

Responsibilities/Tasks:

Support and develop new integration functionality and components.

Collaborate with business analysts and cross-functional teams to refine and implement requirements.

Refactor and improve code to ensure maintainability scalability and adaptability.

Follow and contribute to development standards processes and best practices.

Evaluate and improve application performance reliability and availability.

Develop and execute unit and integration tests.

Produce and maintain technical documentation.

Perform root cause analysis (RCA) on system defects and production issues.

Participate in build packaging and deployment processes.

Execute functional test scenarios during development.

Contribute to team collaboration and where applicable mentor junior developers.

Closing date: 09th of October 2026

Hybrid permanent role; candidates can be based in Cape Town or Gauteng.

Open to people with disabilities.

Minimum Requirements:

Relevant tertiary qualification in Information Technology or Computer/Engineering Sciences and/or matric with at least 5 years relevant experience as a C# Backend Developer as part of a team in a software development environment.

A strong knowledge of development toolsets in C# is essential.

5 years relevant experience with Integration as a focusing on working as part of a team in a software development environment.

Experience with integration solutions utilizing both JSON and XML message exchange.

Experience with XML messaging and schema validation

IBM MQ Client or similar queue services interaction.

Ability to work in a team environment: Follow mentorship/provide team leader mentorship

Collaborate on a common (UML) design model.

A good understanding of the SDLC process tools and techniques specifically as applied to software development methodology.

Experience with the following technologies:

In Depth C#.NET XML knowledge

DotNet 4.7.2

Integration experience (Web/RESTful services)

XML and JSON message interaction.

Understanding of namespace management and utilisation of SQL and experience with a relational database (i.e. MS SQL 2008 onwards)

SoapUI/Postman

Visual Studio

SQL Server Management Studio 2012 upwards

SOAP/REST Services

IBM MQ Series Client interaction

Knowledge and experience of the following would be advantageous:

MVC 5.2.7

Entity Framework 6.2.0

Jquery 3.4.1

Web API 5.2.7

JavaScript

CSS

HTML

Payment Systems

Personal Profile:

Self-starter and highly self-motivated with a strong sense of ownership and the ability to drive tasks and initiatives to completion.

Resilient and emotionally mature able to receive feedback constructively and not easily offended maintaining professionalism in all interactions.

Calm and composed under pressure with the ability to work effectively in high stress environments while delivering consistent results.

Strong team player with experience collaborating across cross functional teams; prior experience in leading or mentoring development teams is advantageous.

Excellent written and verbal communication skills with strong interpersonal abilities suited to both technical and non-technical stakeholders.

High attention to detail with a strong commitment to producing clean maintainable and high-quality code.

Proven ability to conduct root cause analysis in complex integrated environments especially under severe operational pressures.

Strong analytical and problem-solving skills with the ability to multitask and manage multiple priorities simultaneously.

Lifelong learner committed to ongoing professional development and staying current with evolving technologies and best practices.