Senior .NET App Support Engineer - Legacy ASP.NET

Falcon Smart IT Limited in London is seeking a Senior Application Support Engineer to maintain enterprise apps built on ASP.NET MVC and .NET 10 with SQL Server. You will provide Level 2/3 support, incident resolution, and minor enhancements, working with development and infrastructure teams.

The role requires strong debugging, logging, and ITSM tooling experience (ServiceNow), plus knowledge of MVC architecture and authentication. Hybrid London-based role with occasional on-call.