Senior Full Stack Developer

• 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

• 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 systems
• Experience with design patterns and frameworks such as Entity Framework, MVC, MVVM or CQRS
• Proven experience implementing automated testing and quality assurance practices
• Experience with Azure cloud environments
• Strong knowledge of Git, CI/CD pipelines and DevOps principles
• Experience working with MS SQL and relational databases
• Understanding of secure coding principles and data protection requirements
• Experience using AI tools to improve development efficiency

• Opportunity to shape the development of a software solution that directly supports mental health service delivery
• Fully remote working
• Collaborative, flexible and supportive working culture
• Exposure to innovative healthcare technology at scale
• Opportunity to work with modern cloud, AI and digital health solutions
• Generous holiday allowance plus additional company days for national holidays
• Annual performance-based company bonus
• Ongoing professional development and career growth opportunities

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