Senior C# Developer (perm)

Sabenza IT & Recruitment; Mayville (ND); Hybrid; USD 48,000 - 73,000; Full time

Job summary

Sabenza IT & Recruitment's client in the financial services sector seeks a senior .NET developer to deconstruct and strengthen an integrated product. Hybrid work in Cape Town or Woodmead, with a market-related salary.

You will own hard problems, stabilize the platform, and set coding standards for the team. Responsibilities include building reusable components, breaking down complex problems, supporting live systems and planning the next release, and mentoring junior developers while upholding

Qualifications

• A relevant tertiary qualification in Information Technology or Computer/Engineering Sciences.
• Strong Microsoft web development toolsets and a solid grasp of C# and the .NET Framework.
• In-depth ASP.NET, C#.NET and XML on .NET 4.7.2+.

Responsibilities

• Build code that travels; create reusable components across platforms.
• Break complex problems into manageable work for the team.
• Support live systems and build what's next without breaking either.
• Learn the product domain and translate rough requirements with analysts into working software.
• Refactor with intent to keep the codebase maintainable and adaptable.
• Hold standards, follow and improve team processes.
• Push performance and high availability under real load.
• Write unit and integrated tests to prove features work.
• Document component interactions and usage for future teams.
• Review code to protect quality before client delivery.
• Build trust with clients and be dependable under pressure.
• Root cause analysis and fix at the source of defects.
• Build and deploy onto the application server and own the result.
• Run own functional test scenarios before others.
• Incorporate peers' changes and close gaps in tests and data.
• Guide junior and intermediate developers towards timely, quality work.
• Provide technical leadership to the team and adjacent teams.

Skills

C#

ASP.NET

.NET Framework

XML

Microsoft web development

Education

Relevant IT/Engineering qualification

Tools

Visual Studio

Job description

Our client in the Financial Services space who’s Systems Support division is requires a senior who can take a live, integrated product apart and put it back stronger. This is permanent, hybrid work in Cape Town or Woodmead, at a market-related salary, for someone who already leads from the code: reusable components, resilient integrations, and a team that ships clean work. You will own the hard problems, steady the platform, and set the standard for the developers around you. Applications close 16 October 2026. Open to people with disabilities.

Responsibilities

• Build code that travels. Write components that can be reused across platforms, not thrown away after one release.
• Break complex problems into work the team can actually finish.
• Support what is live and build what is next, without letting either slip.
• Learn the product and the domain, then sit with business analysts and turn rough requirements into working software.
• Refactor with intent. Keep the codebase maintainable, adaptable, and ready for the next change.
• Hold the line on standards. Work inside the team’s processes, and improve them where they are weak.
• Push performance and high availability until the system stays up under real load.
• Prove it works. Write unit and integrated tests that show the feature does what it claims.
• Leave a trail. Document how the components fit, and how someone else uses them.
• Review code and protect quality before it reaches a client.
• Build trust with clients. Be the person they can rely on when the system is under pressure.
• Hunt the real cause. Do root cause analysis on defects in an integrated system, then fix the source, not the symptom.
• Build and deploy onto the application server, and own the result.
• Run your own functional test scenarios before anyone else has to.
• Take in other developers’ changes and make the system work again: debug their code, fix test data, close the gaps.
• Guide junior and intermediate developers so quality work lands on time.
• Give technical leadership to this team and to the teams around it.

Requirements

• A relevant tertiary qualification in Information Technology or Computer/Engineering Sciences, and/or matric with at least 10 years of relevant experience, including 5 years as a senior developer in a team.
• Strong Microsoft web development toolsets, and a real grip on the .NET Framework and C#.
• In-depth ASP.NET, C#.NET and XML, on .NET 4.7.2 and above.