Senior C# .Net Developer Commodity OTC Products London (hybrid) £700-800 per day inside IR35Our client is a leading global bank who are looking for a Senior, web-based C#/.NET developer to join their team providing IT development and delivery for the Commodities business, focusing on extending IT system functionality for Commodity OTC Products in the Pricing & Trading systems.Key Responsibilities:Extend IT system functionality for Commodity OTC Products in the Pricing & Trading systemsDeveloping C# .Net & Web applications using latest frameworksAssist 1st and 2nd line support it problem resolution.Work closely with existing Dev Team who are based in the UK and BulgariaWork with other team members to deliver business value via Sprints.Develop full-stack solutions – user interface, business logic, services and data layer.Interact directly with Front Office when required.Skills and Qualifications:C# and .NET: Proficiency in C# programming language and understanding of the .NET Framework and .NET 6+ ecosystem.Web technologies:Infrastructure: Understanding of protocols such as HTTP, SSL/TLS and related technologies such as proxies, firewalls, etc.OpenID Connect and OAuth: Understanding of authentication and authorisation protocols for secure user authentication.Back-end development: Knowledge of ASP.NET Core for building RESTful APIs and web applications.Front-end development: Basic understanding of HTML, CSS, Javascript, React and NodeJS knowledge would be a bonus.SignalR: Familiarity with real-time communication using SignalR.Cloud technologies: Some exposure to Azure cloud technologies, primarily Redis, SignalR and Entra ID.Database management: Proficiency in SQL databases (e.g., SQL Server) and Entity Framework Core for data access.