Senior .NET/C# Developer - Financial Systems Modernization

Senior .NET/C# Developer - Financial Systems Modernization Contract | Fully Remote | 6 month contract (Likely extension)

Overview: Our client, a leading financial services organization, is seeking a Senior C# Developer to support a critical application modernization initiative.

This role requires hands-on experience with investment accounting, portfolio/position data, or general ledger systems - this is a firm requirement, not a preference. Candidates with strong general enterprise C# backgrounds but no financial services domain experience will not be considered, regardless of technical depth. If you don’t have this background, please don’t apply; we won’t be able to move you forward.

Beyond the domain expertise, this role will focus on enhancing and maintaining complex financial applications while helping transition legacy systems into a modern C#/.NET environment. This is not a pure new development role - the ideal candidate is comfortable working across legacy VB applications, C# development, and complex financial data environments, with strong development skills and database expertise.

Required Experience:

• C# development experience in enterprise environments
• VB6/VB.NET experience supporting legacy applications
• Strong experience with:
  • T-SQL development
  • Stored procedures
  • Database optimization
  • Data validation and reconciliation
• Experience with source control/code asset management, ideally AWS CodeCommit
• Experience maintaining and modernizing legacy applications while contributing to new C# development
• Exposure to financial data structures, including:
  • Investment accounting
  • General ledger processes
  • Portfolio and position data

Key Responsibilities:

• Design, develop, and enhance applications using C#/.NET and VB technologies
• Maintain and modernize legacy VB/Crystal Reports applications while delivering new C# solutions
• Develop and optimize complex SQL queries and stored procedures
• Support data validation, reconciliation, and troubleshooting of financial information
• Gather reporting requirements directly from business stakeholders
• Perform code reviews and provide technical guidance to other developers
• Collaborate with technical and business teams to deliver reliable solutions

Nice to Have:

• Experience with Crystal Reports
• Background in financial services, investment systems, or accounting platforms
• Experience with AWS CodeCommit or similar source control tools
• Experience modernizing legacy applications into newer .NET architectures

Why Join? This is an opportunity to work on a highly visible financial systems modernization effort, combining C# development, legacy application enhancement, and complex financial data solutions. If you’re a C# developer with a background in investment or asset management who enjoys solving complex technical challenges across both legacy and modern technologies, we’d love to hear from you.