Senior Software Engineer - C# .NET Azure

Senior Software Engineer – C# / .NET, Azure Leading Fintech | London (1 day in office) | £450-£550 | 6 Months outside IR35 Trakd is partnering with a leading UK fintech to hire a Senior Software Engineer into its core engineering team. The platform processes high volumes of financial transactions for customers across the UK, so reliability, security, and good engineering practice matter. You'll design, build and run cloud-native backend services on Microsoft Azure, working in a modern C#/.NET stack with a team that uses AI-assisted development in its everyday work. This is a hands-on role. You'll own services from design through to production, and help shape how the team builds and ships software. What you'll be doing Designing and building scalable backend services and APIs in C# and .NETDeveloping and supporting cloud-native applications on AzureBuilding microservices and event-driven systems that are resilient, secure and observableOwning CI/CD and release processes across Azure DevOps and GitHub ActionsSupporting production systems, including monitoring, incident response and root-cause fixesWriting secure code and fixing vulnerabilities as part of normal deliveryUsing tools like GitHub Copilot and Claude to speed up delivery and improve code quality and documentationWorking closely with product, engineering and business stakeholders to deliver work that matters to customers What you'll bring Strong backend software engineering experience in C# and .NETExperience designing, developing and supporting cloud-native applications on Microsoft AzureProficiency with Azure DevOps for work management, source control, CI/CD and release processesExperience using GitHub and GitHub Actions to manage source code, automate testing and deploy applicationsKnowledge of API design, microservices architectures and event-driven systemsAn understanding of software security, secure coding practices and vulnerability remediationExperience with SQL and relational databasesFamiliarity with observability, monitoring, incident management and production supportExperience using AI-assisted development tools such as GitHub Copilot and Claude to improve productivity, code quality and documentationStrong communication, collaboration and stakeholder management skills Why join A modern Azure and .NET stack, with room to influence technical directionAn engineering culture that actively backs AI-assisted developmentWork that directly affects millions of customers in a regulated, high-scale environment