C# (API) Developer

SkillsMap; Pretoria; Hybrid; ZAR 520,000 - 750,000; Full time

Benefits offered by this job

Open to people with disabilities

Job summary

Interfront SOC Ltd. is recruiting a C# (API) Developer for a hybrid permanent role in Pretoria.

The role focuses on developing and supporting API and integration solutions within a Microsoft .NET environment, building scalable service-oriented layers and enhancing existing systems. The ideal candidate will have 5+ years in C# backend development, strong .NET knowledge, and experience with JSON/XML messaging, Web/RESTful services, and IBM MQ.

Qualifications

• Requires tertiary IT qualification and experience in C# backend development in a software environment.
• Strong knowledge of .NET toolsets and C# development essential.
• Experience with integration solutions using JSON and XML messaging.
• Familiarity with IBM MQ or similar queue services and RESTful services.
• IBM MQ Client or similar queue service interaction.

Responsibilities

• Support and develop new integration functionality and components.
• Collaborate with analysts and teams to refine requirements and implement changes.
• Refactor code for maintainability, scalability, and performance.
• Produce technical documentation and perform unit/integration testing.
• Participate in build, packaging, and deployment processes and mentor junior developers.

Skills

C# Backend

API Integration

JSON/XML

Unit Testing

Team Mentorship

Education

Relevant IT degree

Tools

ASP.NET

SQL Server

IBM MQ

SOAP/REST

Visual Studio

XML

Job description

C# (API) Developer
Interfront SOC Ltd.
2026/09/26 Pretoria

Job Reference Number: Recruit244/245
Department: Tax
Business Unit:
Industry: Information Technology
Job Type: Permanent
Positions Available: 2
Salary: Market Related To develop & support API & integration solutions within a Microsoft .NET environment. The role involves building & maintaining service-oriented integration layers, enhancing existing systems & delivering new integration capabilities. Working with C#, Angular& React, the intermediate-to-senior developer will contribute to scalable, secure, and high-performing enterprise integration solutions.

Job Description

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.

Job Requirements

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 Microsoft .Net 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 ASP.Net, 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:

• ASP.NET 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.