Hays
Fullstack Developer - NHS app
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Your new company
You will be working for a well-known organisation working remotely with the occasional travel in the London office. This role is inside scope of IR35 and a 3-6-month contract with a possible extension.
Your new role
Overview
We are seeking an experienced Full-Stack Developer and Healthcare Technology Specialist to build a deterministic patient-triage platform integrated with NHS App and NHS Login. This role requires deep healthcare-interoperability expertise, hands-on production experience with HL7 FHIR R4 and UK Core from day one, and strong engineering skills across backend and frontend. You must be confident using AI agents and AI-assisted development tools to deliver safe, maintainable enterprise-grade software in C# (.NET 10) and TypeScript.
Key Responsibilities
- Develop backend healthcare services using C#,.NET 10, REST APIs, and Azure services.
- Implement HL7 FHIR R4 and UK Core profiles with accurate SNOMED CT and ICD-10 clinical coding.
- Build secure, accessible user interfaces using the NHS Digital Design System.
- Use AI agents and code-generation tools responsibly to accelerate delivery while maintaining safety and quality.
- Integrate with NHS Login, NHS App APIs, and national NHS interoperability services.
- Apply healthcare-specific engineering discipline, clinical-workflow understanding, and deterministic logic design.
- Ensure solutions comply with GDPR, DSPT, and relevant healthcare/medical-device standards.
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Required Experience
- Azure experience including Functions, App Services, Key Vault, Monitor, and general cloud-native design.
- C#,.NET 10, REST API development, and enterprise backend engineering.
- Frontend development with TypeScript, JavaScript or NHS Digital Design System components.
- Confident and experienced use of AI development agents and tools in daily workflow.
Highly Desirable
- Experience validating HL7 FHIR resources, terminology bindings and UK Core compliance.
- Deep knowledge of SNOMED CT and ICD-10 clinical coding.
- Strong understanding of clinical workflows, interoperability patterns, and NHS technical constraints.
- Experience with regulated healthcare or medical-device software (ISO 13485, ISO 14971, IEC 62304).
- Experience with national NHS APIs such as GP Connect, PDS, PDM, SCR, or BARS referrals.
- OAuth 2.0, OpenID Connect, and NHS Login integration.
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Summary
This position is ideal for a senior Full-Stack Developer and Healthcare Technology Specialist with strong Azure and.NET 10 skills, proven UK Core FHIR expertise, NHS-compliant frontend experience, and the ability to leverage AI-assisted development responsibly to deliver safe, reliable, audit-ready healthcare technology for national deployment.
What you need to do now
If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.
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