Senior Full Stack Software Engineer (.NET)

Description At System C, 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 are continuing to invest in its safety, quality, and long-term evolution.

We are looking for a Senior Full Stack Software Developer to join our R&D team as a hands-on individual contributor. Design, develop, and maintain software within the ChemoCare product suite

Make sound technical decisions, escalating risks or trade-offs where appropriate

Work closely with QA to support effective testing and high product quality

Contribute to shared 3rd line support, investigating and resolving complex production issues when required

Significant commercial experience operating at senior developer level in both back-end and front-end areas

Strong professional experience with C# and ASP.NET

Strong experience in JavaScript, HTML, CSS and React

Knowledge of principles of writing mobile apps and deployment on apple and android app stores

Experience in Visual C# and MVC

Strong SQL Server experience, including writing and optimising production queries

Experience with React Native

Experience in writing automated unit tests using NUNIT

Good understanding of waterfall, agile and scrum development methodologies, and their practical application.

NET 10 and other latest technologies including AI integration

Experience in TypeScript

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.

Apply today and help us continue to deliver technology that supports better care across the NHS.