Senior Developer (C#, ASP.NET MVC, JavaScript)

Salary: £40,000 - 80,000 per year

Requirements:

• Strong professional experience with C# and ASP.NET MVC
• Strong SQL Server experience
• Experience developing for the web using JavaScript, HTML, and CSS
• Knowledge of principles for writing mobile apps and deploying to Apple and Android app stores
• Experience using GitHub for source control and collaboration
• Strong analytical and problem-solving skills at both a strategic and tactical level
• Experience working with complex or long-lived codebases
• Confidence contributing to technical design and making informed trade-offs
• A pragmatic, calm approach when dealing with ambiguity or pressure
• Clear communication skills, including explaining technical constraints to non-technical stakeholders
• Significant commercial experience operating at senior developer level in both back-end and front-end areas
• Desirable: experience with React Native or React, or equivalent frameworks
• Desirable: experience writing automated unit tests using NUnit
• Desirable: good understanding of waterfall, agile, and scrum development methodologies and their practical application
• Desirable: experience in .NET 10 and other latest technologies including AI integration
• Desirable: experience in TypeScript

Responsibilities:

• Design, develop, and maintain software within the CIS Oncology (ChemoCare) product suite
• Own complex features or technical areas through design, implementation, and handover into testing and release
• Make technical decisions and escalate risks or trade-offs where needed
• Contribute to the technical direction of the ChemoCare product suite, balancing near-term delivery with longer-term maintainability
• Work closely with the QA team to support effective testing, defect resolution, and overall product quality
• Ensure code is clear, maintainable, and appropriately tested in line with agreed development standards
• Review code written by others and provide practical, constructive feedback
• Support and mentor less experienced developers as part of normal team working
• Provide 3rd line support as part of a shared team responsibility, including investigation and resolution of complex defects where required

Technologies:

• AI
• ASP.NET
• Android
• C#
• CSS
• GitHub
• Support
• JavaScript
• LESS
• Mobile
• MVC
• React
• React Native
• SQL
• Web
• TypeScript

More:

We create technology that connects care and improves outcomes across the NHS. Our CIS Oncology (ChemoCare) product plays a critical role in supporting chemotherapy treatment management nationwide, and we continue to invest in its safety, quality, and long-term evolution. This Senior Developer role sits within our CIS Oncology product suite and is a senior individual contributor position for an experienced hands-on developer. You will work on software that genuinely matters, alongside people who value collaboration, ownership, and integrity. We support flexible working, encourage reflective practice, and value those who are comfortable navigating change while keeping quality and patient safety at the forefront.

last updated 32 week of 2026