C# Developer

Company: Sanderson
Apply for the C# Developer
Location: London
Job Description:

We’re hiring a C# Developer – Application Support on a fixed-term contract to support a business-critical internal investment application.

This is a hands-on role focused on maintaining and improving an existing C#/.NET application, resolving production issues, delivering small enhancements and supporting the development of a new C# application from an existing design.

You’ll work closely with Investment, Technology, Risk and Operations teams, supporting both the application itself and related investment risk, data and reporting requirements.

Key responsibilities:

  • Maintain and support an existing C#/.NET application
  • Investigate and resolve application and production issues
  • Deliver enhancements and fixes across the existing codebase
  • Develop a new C# application from a supplied design brief
  • Work with SQL Server, Python and VBA across data, modelling and reporting requirements
  • Support testing, releases, deployment and post-release checks
  • Work directly with business users to understand requirements and resolve issues
  • Maintain technical documentation and support handover activity
  • Strong C# and .NET development experience
  • Experience with Blazor and/or WPF
  • GitHub and/or Azure DevOps
  • Application support and troubleshooting experience
  • Experience working with investment, portfolio, risk or performance data

Experience within investment management, pensions, asset management or another regulated financial environment would be highly advantageous.

Working pattern:

Hybrid – Monday plus one additional office day per week.

#J-18808-Ljbffr…

Posted: September 25th, 2026