Salary: £45,000 - 70,000 per year Requirements: Strong proficiency in .NET Framework/Core Experience with SQL Server and Oracle performance tuning Knowledge of secure SDLC practices and OWASP principles Hands-on experience with CI/CD pipelines and troubleshooting across Windows Servers and databases Excellent communication and problem-solving skills Familiarity with React/TypeScript (desirable) Certifications in Azure/AWS, CISSP, or DevOps (desirable) Familiarity with Docker/Kubernetes, observability practices, and API gateways (desirable) Exposure to greenfield projects and Python scripting (desirable) Responsibilities: Design, build, and maintain server-side and client-side applications using .NET Framework/Core, React/TypeScript, and relational databases (SQL Server, Oracle) Refactor legacy systems to reduce technical debt and improve performance Implement modern security patterns (OAuth2/OpenID Connect, OWASP principles) Optimise database queries and schemas; ensure safe migrations Participate in CI/CD processes, code reviews, and adhere to Change Management procedures Collaborate with cross-functional teams and provide occasional out-of-hours support Technologies: .NET Framework API AWS Azure C# CI/CD DevOps Docker Kubernetes OWASP OpenID Oracle Python React SQL Security TypeScript Windows ASP.NET Cloud Support More: We are a leading global investment bank looking for an experienced C#. NET Developer to join our team on a 6-month contract in London (Hybrid). This role is pivotal in modernising and supporting business-critical applications while contributing to greenfield development initiatives. By joining us, you will be part of a dynamic team working on cutting-edge projects that drive innovation within the global investment banking environment. last updated 4 week of 2026