Role: Senior C# .NET Developer
Location: London, UK
Working Pattern: Hybrid, 3 days per week onsite, Canary Wharf or Liverpool Street
Employment Type: Contract
Role Overview
We are seeking experienced Senior C# .NET Developers to join a strategic technology transformation programme within a leading international banking environment.
The successful candidates will design, develop and enhance enterprise-grade applications supporting critical business functions across front-office, middle-office and back-office domains. They will work closely with Solution Architects, Technical Analysts, Business Analysts, Data Engineers and QA teams to deliver scalable, secure and high-performing solutions in a highly regulated environment.
Key Responsibilities
- Design, develop and maintain enterprise applications using C# and .NET.
- Develop scalable, secure and high-performance APIs, services and distributed applications.
- Work with Technical Analysts and business stakeholders to translate requirements into technical solutions.
- Contribute to solution architecture, technical design and code reviews.
- Develop RESTful APIs and integration services.
- Implement monitoring, logging and error handling.
- Work with relational and non-relational databases.
- Develop automated unit, integration and regression tests.
- Support CI/CD and DevOps practices.
- Troubleshoot production issues and perform root-cause analysis.
- Follow engineering, security and development standards.
- Support application modernisation and cloud adoption.
Mandatory Skills
- .NET Core / .NET 6+
- ASP.NET Core / Web API
- REST APIs and microservices
- SQL Server, including complex queries, stored procedures and optimisation
- Entity Framework / ORM
- Object-oriented design and design patterns
- Distributed systems and enterprise integration
- Unit and automated testing
- Azure DevOps, Git and CI/CD
- Strong troubleshooting and problem-solving capability
- Good stakeholder communication
- Banking, Capital Markets or Financial Services
- Kafka, RabbitMQ or Azure Service Bus
- Event-driven architectures
- React / Angular
- Application observability and performance engineering
- DevSecOps and secure coding
Senior C# .Net Developer employer: London Business News
Avanti Recruitment is an excellent employer for a Senior Product Engineer, offering a unique opportunity to work remotely within a dynamic fintech environment. The company fosters a collaborative work culture that encourages engineers to take ownership of their projects, while also investing in AI-assisted development tools to enhance efficiency and innovation. With a focus on employee growth and direct access to senior colleagues, this role provides meaningful engagement in both established and new product development, making it an attractive choice for those seeking rewarding employment in the financial services sector.
