Senior Software Developer

Overview

In this role you will shape the integration landscape, delivering modern, secure solutions in a hands-on capacity while mentoring peers. You’ll work within the Technology team to modernise APIs and cloud-based workflows, aligning with architectural best practices and cross-functional collaboration. The position focuses on C#/.NET, REST APIs, microservices and event-driven patterns to enable scalable, maintainable services. You’ll partner with architects and engineers to drive impactful, observable outcomes that support the company’s technology journey.

Pay / Benefits

• Generous bonus scheme
• Hybrid working
• Salary circa 74,000 dependent on experience
• Head office in London with some travel
• Flexible work arrangements

Responsibilities

• Develop and modernise integrations using C#/.NET, including Azure Logic Apps, Function Apps, containerised microservices and event-driven microservices
• Build, integrate and manage APIs that connect services and platforms across the technology landscape
• Design and develop secure, maintainable solutions using established engineering principles and patterns
• Work with Azure messaging and integration technologies to support event-driven architectures
• Contribute to automated testing, CI/CD and Git-based development practices
• Collaborate with Architects and other developers to shape effective technical solutions
• Create and maintain clear process, service and technical documentation
• Mentor and support other developers, sharing technical knowledge to grow the team’s Azure Integration Services skills
• Help ensure solutions are secure, well maintained and compliant with internal governance

Key requirements

• Strong professional experience with C# and .NET, including ASP.NET Core MVC and Web API development
• Experience designing and building REST APIs, microservices and event-driven solutions
• Solid knowledge of software engineering principles (design patterns, SOLID, clean architecture)
• Experience with Docker and containerisation; automated testing with xUnit or similar
• Experience with SQL Server and data access technologies
• Good knowledge of CI/CD and Git-based development
• Experience designing event-driven solutions using Azure Service Bus, Apache Kafka or equivalent messaging technologies
• Experience implementing secure APIs using OAuth 2.0, OpenID Connect, JWT and Microsoft Entra ID
• Experience using AI-assisted development tools (e.g., GitHub Copilot, Microsoft Copilot, Claude Code, Gemini CLI, Cursor) while maintaining engineering quality
• Interest in mentoring other developers and sharing knowledge across the team

• Mentoring and coaching
• Collaborative mindset
• Communication and knowledge sharing
• C# and .NET expertise
• ASP.NET Core MVC and Web API
• REST API design

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