Senior Full Stack Developer

About this role

Senior Full Stack Developer

England (Remote)

Full time, permanent

Salary: £55,000 – £70,000 (DOE)

Competitive benefits package

Building technology that makes a real difference in healthcare

Our client, Holmusk, is a global health technology company transforming behavioural health and chronic disease care through data, digital innovation and evidence-driven medicine.

Following continued growth, they are seeking an experienced Senior Full Stack Developer to join their UK team and play a key role in the development of healthcare applications used within Mental Health Trusts across the UK.

This is an opportunity to combine technical excellence with meaningful impact, helping to build secure, scalable and compliant software that supports frontline healthcare professionals.

Senior Full Stack Developer, the role:

• Design, develop and maintain scalable full stack applications using C#/.NET and React
• Build responsive, high-performance user interfaces using modern JavaScript, HTML and CSS
• Contribute to architecture decisions, ensuring scalability, maintainability and security
• Develop and maintain automated testing frameworks across unit, integration and end-to-end testing
• Drive engineering best practice through code reviews and quality standards
• Work within a regulated software environment with a strong focus on quality and compliance
• Collaborate closely with a small, highly skilled development team
• Support CI/CD pipelines and cloud-based deployment processes
• Troubleshoot, optimise and improve performance across applications and services
• Contribute to documentation, traceability and technical governance requirements
• Support future growth of the engineering team through mentoring and knowledge sharing

Senior Full Stack Developer, the person:

• Strong commercial experience with C# /.NET Core /.NET 6+
• Strong React.js and modern JavaScript development experience
• Solid understanding of REST APIs, microservices and distributed syst...