Senior .NET Developer

Senior .NET Developer

Start: ASAP
Duration: until 30/05/2026
Location: 3 days on site in central London
Rate: £450-475 /day (inside IR35)

About the Role

A leading global financial institution is seeking experienced .NET Developers to join their London-based team. You will contribute to critical projects within Capital Markets and Risk Management, developing and enhancing enterprise-grade applications.

Key Responsibilities

• Design, develop, and maintain applications using C#, .NET Core / .NET Framework.
• Build scalable solutions leveraging MVC architecture and RESTful APIs.
• Develop and support Windows desktop applications (WinForms, WPF) connected to large on-premise databases.
• Write and optimize complex SQL Server queries.
• Apply OOP principles and design patterns to deliver high-quality software.
• Collaborate across business and IT teams through all SDLC phases.
• Participate in code reviews, documentation, and CI/CD using Git.
• Work with both legacy and modern systems.

Skills & Experience

• 8-10 years' experience in professional software development.
• Expertise in C#, .NET Core / .NET Framework, SQL Server.
• Proven experience with WinForms, WPF, and large database environments.
• Strong understanding of MVC, REST APIs, OOP, and design patterns.
• Exposure to Azure or AWS cloud environments.
• Familiarity with Git, CI/CD, and modern DevOps practices.
• Excellent communication skills with technical and non-technical stakeholders.

Preferred

• Background in Capital Markets (Market Risk, Credit Risk, Counterparty Risk, Trade Lifecycle).