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NTT DATA Logo NTT DATA · IT - Software Development

Senior Software Development Engineer – .NET Core

South Africa, Johannesburg · Job Posted March 05, 2026
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Job Description

The Senior Software Development Engineer will play a crucial role in leading the technical delivery of .NET Core solutions within an agile team. With 5-8 years of experience, the candidate will design and develop robust applications, mentor junior engineers, and ensure adherence to best practices. A bachelor’s degree in Computer Science or Engineering is preferred, along with relevant certifications. This position offers the opportunity to work on scalable and secure solutions in a collaborative environment.

Job Responsibility

  • Design and develop robust .NET Core applications aligned to client business and operational requirements
  • Translate business and functional requirements into well-structured, scalable technical solutions
  • Take ownership of complex components, integrations, and critical code paths within the solution
  • Contribute to architectural decisions and ensure adherence to established patterns and best practices
  • Lead by example through high-quality code, testing discipline, and documentation
  • Actively participate in sprint planning, estimation, and delivery tracking using Azure DevOps
  • Perform code reviews and provide constructive guidance to intermediate and junior developers
  • Collaborate with testers, analysts, and DevOps engineers to ensure smooth end-to-end delivery
  • Support deployment, monitoring, and troubleshooting across non-production and production environments
  • Ensure solutions comply with security, governance, and regulatory standards applicable to client environments

Requirements

  • 5–8 years of professional software development experience
  • Proven experience delivering production-grade .NET Core applications
  • Experience working in Agile teams with responsibility for significant solution components
  • Exposure to regulated or enterprise environments (e.g., healthcare, finance) is advantageous
  • Demonstrated experience supporting applications across the full SDLC, including post-deployment support
  • Bachelor’s degree in Computer Science, Engineering, or related field (advantageous) or equivalent practical experience
  • Microsoft or Azure-related certifications are advantageous
  • Additional certifications in software architecture or cloud technologies are beneficial
  • Strong technical problem-solving and analytical skills
  • Ability to work independently while contributing effectively within a team
  • Comfortable engaging with technical and non-technical stakeholders
  • Demonstrated ownership mindset and accountability for delivered solutions
  • Ability to mentor and uplift less experienced developers
  • Solid understanding of Agile delivery methodologies and SDLC best practices
  • Experience balancing technical excellence with delivery timelines
  • Languages & Frameworks: C#, ASP.NET Core, EF Core, SQL, TypeScript, HTML/CSS
  • DevOps & CI/CD: Azure DevOps, Git, Docker (experience advantageous)
  • Front-End: Vue (or similar modern JavaScript framework)
  • Cloud & Infrastructure: Microsoft Azure (App Services, Functions, Storage, Virtual Machines)
  • Testing & QA: xUnit, Playwright (or equivalent), Postman
  • Security: OAuth2, JWT, OWASP Top 10 secure coding practices

Nice to have

  • Exposure to regulated or enterprise environments (e.g., healthcare, finance) is advantageous
  • Microsoft or Azure-related certifications are advantageous
  • Additional certifications in software architecture or cloud technologies are beneficial
  • Docker (experience advantageous)
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