Contract Duration: Six Months

Position Objective:

Deliver contracted backend and API enhancements to agreed scope, quality, and schedule. Maintain service availability, performance, and SLA compliance across the platform estate. Sustain and progressively improve both .NET Framework 4.8 and .NET Core services. Improve database performance and query efficiency across SQL Server workloads. Strengthen test coverage, deployment automation, and technical documentation

Job Description & Responsibilities:

Design, develop, and maintain REST APIs and backend services
Develop and maintain services across both .NET Framework 4.8 and .NET Core
Design and optimize SQL Server databases, including queries, stored procedures, indexing, and performance tuning
Implement API authentication and authorization
Debug, troubleshoot, and support existing backend applications in production
Analyse application logs and monitoring output to diagnose production issues, and participate in incident investigation and root-cause analysis
Contribute to incident and RCA documentation
Participate in the out-of-hours and on-call support rota for production issues
Work from Azure Boards and maintain a clean delivery audit trail in Azure DevOps
Write and maintain unit and integration tests
Contribute to CI/CD pipelines and deployment processes
Support services deployed across both cloud and data-centre-hosted environments
Write clean, maintainable, well-structured code and participate in code reviews
Produce and maintain technical documentation
Work effectively within an existing development team and alongside frontend and mobile engineers

Qualifications & Experience:

Bachelor Degree in Computer Science or a relevant field.
Minimum 4 to 5 years professional backend development experience
Experience maintaining and extending established applications across both .NET Framework and .NET Core
Demonstrated experience delivering and supporting production-grade backend services and APIs
Experience taking independent ownership of technical problems through to production-ready resolution
Experience working within Agile delivery environments and structured code review processes
Willingness to participate in an out-of-hours support rotation

Senior Backend Developer