Senior .Net Developer; Integrations

The Role

A leading enterprise is looking for a Senior Systems Integration Developer to own the connective tissue between their internal platforms and external third‑party systems. You will be the engineer that other developers turn to when integration code breaks, security threats need mitigating, or a new enterprise system needs to communicate with five others cleanly. This is not a maintenance seat – you will map conceptual, end‑to‑end solutions independently and shape how the organization’s application architecture evolves.

• Develop and integrate multiple enterprise systems in line with business needs and requirements.
• Independently map out conceptual, end‑to‑end application solutions and document technical specifications.
• Build and maintain secure APIs/frameworks for external third‑party systems to interface with.
• Perform configuration management on integration code and system interfaces.
• Write, translate, and code software programs and applications to specification.
• Run and monitor performance tests on new and existing systems; isolate, debug, and resolve problem areas.
• Administer test results, deliver root‑cause analysis, and drive fixes.
• Manage and mentor junior developers.
• Participate fully across the SDLC on a variety of concurrent projects.
• Research emerging tools, languages, and standards; recommend and schedule improvements and upgrades.
• Collaborate with developers, analysts, and QA to conceptualize new software solutions.
• Stay current on data protection and security threats, and ensure risks are mitigated.
• Conform to relevant legislation, policy, and industry best practice.

• 5+ years of experience directly related to Systems Integration, including most of the following:
  • C#, ASP.NET (5+ years)
  • ASP.NET Core (2‑3 years)
  • MS SQL, Web API
  • JavaScript, JQuery, XML, CSS, Bootstrap
  • SSRS
  • MS Azure Dev Ops (2‑3 years)
  • Agile methodology
• Matric plus a tertiary qualification in Computer Science, Information Systems, or equivalent (NQF Level
  7).
• Advantageous:
  • Microsoft Certified Technology Specialist (MCTS)
  • Microsoft Certified Professional Developer (MCPD)
• Own reliable transport.

Senior scope from day one – you are managing integration architecture and guiding junior developers, not just executing tickets. You will work with a broad, modern .NET stack with room to specialize. This role is based in Johannesburg with a package that reflects the seniority of the mandate.