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

The System

Belfast, UK

1 day ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Compensation

£40,000.0 - £80,000.0

Working hours

Regular working hours

Job source

www.adzuna.co.uk

Tech stack

ASP.NET HTML JavaScript (Programming Language) .NET Framework LTE (Telecommunication) Artificial Intelligence Android Software Development Application Integration Architecture ASP.NET MVC Framework Unit Testing C Sharp (Programming Language) Cascading Style Sheets (CSS)

+12 more

Code Review Github Mobile Application Software Model View Controller (MVC) Nunit Scrum Methodology Standard Sql TypeScript ReactJS Backend React Native Software Version Control

Job description

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, 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.

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